Secreted and transmembrane polypeptides and nucleic acids encoding the same

ABSTRACT

The present invention is directed to novel polypeptides and to nucleic acid molecules encoding those polypeptides. Also provided herein are vectors and host cells comprising those nucleic acid sequences, chimeric polypeptide molecules comprising the polypeptides of the present invention fused to heterologous polypeptide sequences, antibodies which bind to the polypeptides of the present invention and to methods for producing the polypeptides of the present invention.

FIELD OF THE INVENTION

[0001] The present invention relates generally to the identification andisolation of novel DNA and to the recombinant production of novelpolypeptides.

BACKGROUND OF THE INVENTION

[0002] Extracellular proteins play important roles in, among otherthings, the formation, differentiation and maintenance of multicellularorganisms. The fate of many individual cells, e.g., proliferation,migration, differentiation, or interaction with other cells, istypically governed by information received from other cells and/or theimmediate environment. This information is often transmitted by secretedpolypeptides (for instance, mitogenic factors, survival factors,cytotoxic factors, differentiation factors, neuropeptides, and hormones)which are, in turn, received and interpreted by diverse cell receptorsor membrane-bound proteins. These secreted polypeptides or signalingmolecules normally pass through the cellular secretory pathway to reachtheir site of action in the extracellular environment.

[0003] Secreted proteins have various industrial applications, includingas pharmaceuticals, diagnostics, biosensors and bioreactors. Mostprotein drugs available at present, such as thrombolytic agents,interferons, interleukins, erythropoietins, colony stimulating factors,and various other cytokines, are secretory proteins. Their receptors,which are membrane proteins, also have potential as therapeutic ordiagnostic agents. Efforts are being undertaken by both industry andacademia to identify new, native secreted proteins. Many efforts arefocused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel secreted proteins. Examples ofscreening methods and techniques are described in the literature [see,for example, Klein et al., Proc. Natl. Acad. Sci. 93:7108-7113 (1996);U.S. Pat. No. 5,536,637)].

[0004] Membrane-bound proteins and receptors can play important rolesin, among other things, the formation, differentiation and maintenanceof multicellular organisms. The fate of many individual cells, e. g.,proliferation, migration, differentiation, or interaction with othercells, is typically governed by information received from other cellsand/or the immediate environment. This information is often transmittedby secreted polypeptides (for instance, mitogenic factors, survivalfactors, cytotoxic factors, differentiation factors, neuropeptides, andhormones) which are, in turn, received and interpreted by diverse cellreceptors or membrane-bound proteins. Such membrane-bound proteins andcell receptors include, but are not limited to, cytokine receptors,receptor kinases, receptor phosphatases, receptors involved in cell-cellinteractions, and cellular adhesin molecules like selectins andintegrins. For instance, transduction of signals that regulate cellgrowth and differentiation is regulated in part by phosphorylation ofvarious cellular proteins. Protein tyrosine kinases, enzymes thatcatalyze that process, can also act as growth factor receptors. Examplesinclude fibroblast growth factor receptor and nerve growth factorreceptor.

[0005] Membrane-bound proteins and receptor molecules have variousindustrial applications, including as pharmaceutical and diagnosticagents. Receptor immunoadhesins, for instance, can be employed astherapeutic agents to block receptor-ligand interactions. Themembrane-bound proteins can also be employed for screening of potentialpeptide or small molecule inhibitors of the relevant receptor/ligandinteraction.

[0006] Efforts are being undertaken by both industry and academia toidentify new, native receptor or membrane-bound proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel receptor or membrane-boundproteins.

[0007] 1. PRO1560

[0008] The tetraspan family of proteins has grown to includeapproximately 20 known genes from various species, including drosophila.The tetraspans are also known as the transmembrane 4 (TM4) superfamilyand are proposed to have an organizing function in the cell membrane.Their ability to interact with other molecules and function in suchdiverse activities as cell adhesion, activation and differentiation,point to a role of aggregating large molecular complexes. Skubitz, etal., J. Immunology, 157:3617-3626 (1996). The tetraspan group has alsoemerged as a set of proteins with prominent functions in Schwann cellbiology. Mirsky and Jessen, Curr. Opin. Neurobiol., 6(1):89-96 (1996).Tetraspans (also sometimes called tetraspanins) are further described inMaecker, et al., FASEB, 11:428-442 (1997). Thus, members of thetetraspan family are of interest.

[0009] 2. PRO444

[0010] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO444.

[0011] 3. PRO1018

[0012] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1018.

[0013] 4. PRO1773

[0014] The primary and rate-limiting step in retinoic acid biosynthesisrequires the conversion of retinol to retinal. Retinol dehydrogenaseproteins are enzymes which function to recognize holo-cellularretinol-binding protein as a substrate, thereby catalyzing the firststep of retinoic acid biogenesis from its substrate. Various retinoldehydrogenase genes have been cloned and characterized, wherein theproducts of these genes are suggested as potentially being useful forthe treatment of retinitis pigmentosa, psoriasis, acne and variouscancers (Chai et al., J. Biol. Chem. 270:28408-28412 (1995) and Chai etal., Gene 169:219-222 (1996)). Given the obvious importance of theretinol dehydrogenase enzymes, there is significant interest in theidentification and characterization of novel polypeptides havinghomology to a retinol dehydrogenase. We herein describe theidentification and characterization of novel polypeptides havinghomology to a retinol dehydrogenase protein, designated herein asPRO1773 polypeptides.

[0015] 5. PRO1477

[0016] Glycosylation is an important mechanism for modulating thephysiochemical and biological properties of proteins in a stage- andtissue-specific manner. One of the important enzymes involved inglycosylation in Saccharomyces cerevisiae is alpha 1,2-mannosidase, anenzyme that catalyzes the conversion of Man9GlcNAc2 to Man8GlcNAc2during the formation of N-linked oligosaccharides. The Saccharomycescerevisiae alpha 1,2-mannosidase enzyme of is a member of the Class Ialpha 1,2-mannosidases that are conserved from yeast to mammals. Giventhe important roles played by the alpha 1,2-mannosidases and themannosidases in general in glycosylation and the physiochemical activityregulated by glycosylation, there is significant interest in identifyingnovel polypeptides having homology to one or more mannosidases. Weherein describe the identification and characterization of novelpolypeptides having homology to a mannosidase protein, designated hereinas PRO1477 polypeptides.

[0017] 6. PRO1478

[0018] Recently, a new subfamily of galactosyltransferase genes thatencode type II transmembrane proteins was identified from a mousegenomic library (Hennet et al., (1998) J. Biol. Chem. 273(1):58-65).Galactosyltransferases, in general, are all of interest. Beta1,4-galactosyltransferase is been found in two subcellular compartmentswhere it is believed to perform two distinct function. Evans, et al.,Ioessays, 17(3):261-268 (1995). Beta 1,4-galactosyltransferase isdescribed as a possible transducing receptor in Dubois and Shur, Adv.EXP. Med. Biol., 376:105-114 (1995), and further reported on in Shur,Glycobiology, 1(6):563-575 (1991). Expression and function of cellsurface galactosyltransferase is reported on in Shur, Biochim. Biophys.Acta., 988(3):389-409 (1989). Moreover, the receptor function ofgalactosyltransferase during mammalian fertilization is described inShur, Adv. Exp. Biol., 207:79-93 (1986), and the receptor functionduring cellular interactions is described in Shur, Mol. Cell Biochem.,61(2):143-158 (1984). Thus, it is understood that galactosyltransferasesand their related proteins are of interest.

[0019] 7. PRO831

[0020] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO831.

[0021] 8. PRO1113

[0022] Protein-protein interactions include receptor and antigencomplexes and signaling mechanisms. As more is known about thestructural and functional mechanisms underlying protein-proteininteractions, protein-protein interactions can be more easilymanipulated to regulate the particular result of the protein-proteininteraction. Thus, the underlying mechanisms of protein-proteininteractions are of interest to the scientific and medical community.

[0023] All proteins containing leucine-rich repeats are thought to beinvolved in protein-protein interactions. Leucine-rich repeats are shortsequence motifs present in a number of proteins with diverse functionsand cellular locations. The crystal structure of ribonuclease inhibitorprotein has revealed that leucine-rich repeats correspond to beta-alphastructural units. These units are arranged so that they form a parallelbeta-sheet with one surface exposed to solvent, so that the proteinacquires an unusual, nonglubular shape. These two features have beenindicated as responsible for the protein-binding functions of proteinscontaining leucine-rich repeats. See, Kobe and Deisenhofer, TrendsBiochem. Sci., 19(10):415-421 (Oct. 1994).

[0024] A study has been reported on leucine-rich proteoglycans whichserve as tissue organizers, orienting and ordering collagen fibrilsduring ontogeny and are involved in pathological processes such as woundhealing, tissue repair, and tumor stroma formation. lozzo, R. V., Crit.Rev. Biochem. Mol. Biol., 32(2):141-174 (1997). Others studiesimplicating leucine rich proteins in wound healing and tissue repair areDe La Salle, C., et al., Vouv. Rev. Fr. Hematol. (Germany),37(4):215-222 (1995), reporting mutations in the leucine rich motif in acomplex associated with the bleeding disorder Bernard-Soulier syndrome,Chlemetson, K. J., Thromb. Haemost. (Germany), 74(1):111-116 (July1995), reporting that platelets have leucine rich repeats and Ruoslahti,E. I., et al., WO9110727-A by La Jolla Cancer Research Foundationreporting that decor in binding to transforming growth factorβ hasinvolvement in a treatment for cancer, wound healing and scarring.Related by function to this group of proteins is the insulin like growthfactor (IGF), in that it is useful in wound-healing and associatedtherapies concerned with re-growth of tissue, such as connective tissue,skin and bone; in promoting body growth in humans and animals; and instimulating other growth-related processes. The acid labile subunit ofIGF (ALS) is also of interest in that it increases the half-life of IGFand is part of the IGF complex in vivo.

[0025] Another protein which has been reported to have leucine-richrepeats is the SLIT protein which has been reported to be useful intreating neuro-degenerative diseases such as Alzheimer's disease, nervedamage such as in Parkinson's disease, and for diagnosis of cancer, see,Artavanistsakonas, S. and Rothberg, J. M., WO9210518-A1 by YaleUniversity. Of particular interest is LIG-1, a membrane glycoproteinthat is expressed specifically in glial cells in the mouse brain, andhas leucine rich repeats and immunoglobulin-like domains. Suzuki, etal., J. Biol. Chem. (U.S.), 271(37):22522 (1996). Other studiesreporting on the biological functions of proteins having leucine richrepeats include:Tayar, N., et al., Mol. Cell Endocrinol., (Ireland),125(1-2):65-70 (Dec. 1996) (gonadotropin receptor involvement); Miura,Y., et al., Nippon Rinsho (Japan), 54(7):1784-1789 (July 1996)(apoptosis involvement); Harris, P. C., et al., J. Am. Soc. Nephrol.,6(4):1125-1133 (Oct. 1995) (kidney disease involvement).

[0026] 9. PRO1194

[0027] The nuclear genes PET117 and PET119 are required for the assemblyof active cytochrome c oxidase in S. Cerevisiae, and therefore, are ofinterest. Also of interest are nucleic acids which have sequenceidentity with these genes. PET genes are further described in McEwen, etal., Curr. Genet., 23(1):9-14 (1993).

[0028] 10. PRO1110

[0029] The bone marrow plays many important roles in the mammal. One ofthose roles is to provide a source of various progenitor cells thatdifferentiate into important cells and other components of the blood andimmune systems. As such, the function of the myeloid system is ofextreme interest.

[0030] We herein describe the identification and characterization ofnovel polypeptides having homology to myeloid upregulated protein,designated herein as PRO11 10 polypeptides.

[0031] 11. PRO1378

[0032] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1378.

[0033] 12. PRO1481

[0034] Efforts are being undertaken by both industry and academia toidentify new, native proteins. Many efforts are focused on the screeningof mammalian recombinant DNA libraries to identify the coding sequencesfor novel proteins. We herein describe the identification andcharacterization of a novel protein designated herein as PRO1481.

[0035] 13. PRO1189

[0036] There has been much interest in the identification of receptorproteins on stem cells and progenitor cells which may be involved intriggering proliferation or differentiation. A type II transmembraneprotein was identified in proliferating progenitor cells in the outerperichondrial rim of the postnatal mandibular condyle proliferation. Theinvestigators concluded that E25 could be a useful marker forchondro-osteogenic differentiation (Deleersnijder, et al. J. Biol. Chem.271(32):19475-19482 (1996)).

[0037] 14. PRO1415

[0038] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1415.

[0039] 15. PRO1411

[0040] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1411.

[0041] 16. PRO1295

[0042] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1295.

[0043] 17. PRO1359

[0044] Enzymes such as hyaluronidase, sialyltransferase, urokinase-typeplasminogen activator, plasmin, matrix metalloproteinases, and others,play central roles in the catabolism of extracellular matrix molecules.As such, these enzymes and inhibitors thereof, may play roles inmetastatic cancer and the treatment thereof. Van Aswegen and du Plessis,Med. Hypotheses, 48(5):443-447 (1997). For the foregoing reason, as wellas their diversity in substrate specificity example, sialyltransferasesare of particular interest. For example, a peptide of interest is theGalNAc alpha 2, 6-sailytransferase as described in Kurosawa, et al., J.Biol. Chem., 269(2):1402-1409 (1994). This peptide was constructed to besecreted, and retained its catalytic activity. The expressed enzymeexhibited activity toward asialomucin and asialofetuin, but not otherglycoproteins tested. As sialylation is an important function,sialyltransferases such as this one, and peptides related by sequenceidentity, are of interest. Sialyltransferases are further described inthe literature, see for example, Sjoberg, et al, J. Biol. Chem.,271(13):7450-7459 (1996), Tsuji, J. Biochem., 120(l):1-13 (1996) andHarduin-Lepers, et al., Glvcobiology, 5(8):741-758 (1995).

[0045] 18. PRO1190

[0046] Kang et al. reported the identification a novel cell surfaceglycoprotein of the Ig superfamily (J. Cell biol. (1997)138(1):203-213). Cell adhesion molecules of the Ig superfamily areimplicated in a wide variety of biological processes, including cellmigration, growth control, and tumorigenesis. The Kang et al. studiessuggest that loss of CDO function may play a role in oncogenesis.Accordingly, the identification of additional CDO-like molecules, andmore generally, cell adhesion molecules of the Ig superfamily, is ofinterest.

[0047] 19. PRO1772

[0048] Peptidases are enzymatic proteins that function to cleave peptidesubstrates either in a specific or non-specific manner. Peptidases aregenerally involved in a large number of very important biologicalprocesses in mammalian and non-mammalian organisms. Numerous differentpeptidase enzymes from a variety of different mammalian andnon-mammalian organisms have been both identified and characterized. Themammalian peptidase enzymes play important roles in many differentbiological processes including, for example, protein digestion,activation, inactivation, or modulation of peptide hormone activity, andalteration of the physical properties of proteins and enzymes.

[0049] In light of the important physiological roles played by peptidaseenzymes, efforts are currently being undertaken by both industry andacademia to identify new, native peptidase homologs. Many of theseefforts are focused on the screening of mammalian recombinant DNAlibraries to identify the coding sequences for novel transmembraneproteins. Examples of screening methods and techniques are described inthe literature [see, for example, Kleinet al., Proc. Natl. Acad. Sci.,93:7108-7113 (1996); U.S. Pat. No. 5,536,637)]. We herein describe theidentification of novel polypeptides having homology to variouspeptidase enzymes, designated herein as PRO1772 polypeptides.

[0050] 20. PRO1248

[0051] Putative protein-2 (PUT-2) is a homolog of the human diseasegenes L1CAM, G6PD and P55 (Riboldi Tunnicliffe et al., Genome Analysis,submitted). As such, there is interest in identifying novel polypeptidesand encoding DNA having homology to the PUT-2 protein. We hereindescribe the identification and characterization of novel polypeptideshaving homology to PUT-2 protein, designated herein as PRO1248polypeptides.

[0052] 21. PRO1316

[0053] Dickkopf (Dkk) is a family of secreted proteins having a highdegree of homology in the cysteine-rich domains (i.e., 80-90%). Dkk-1,the first discovered member, of this family has potent head-inducginactivity on the Spemann organizer. Glinka et al., Nature 391(6665):357-362 (1988). The Spemann organizer of the amphibian embryo canbe subdivided into two discrete activities, namely trunk organizer andhead organizer. Dkk-1 has been found to be both sufficient and necessaryto cause head induction in Xenopus embryos and is further a potentantagonist of Wnt signaling, suggesting that the Dkk genes encode anentire family of Wnt inhibitors.

[0054] Members of the Wnt gene family function in both normaldevelopment and differentiation as well as in tumorigenesis. Wnts areencoded by a large gene family whose members have been found in roundworms, insects, cartilaginous fish, and vertebrates. Holland et al.,Dev. Suppl., 125-133 (1994). Wnt genes encode a family of secretedglycoproteins that modulate cell fate and behavior in embryos throughactivation of receptor-mediated signaling pathways.

[0055] Studies of mutations in Wnt genes have indicated a role for Wntsin growth control and tissue patterning. In Drosophila, wingless (wg)encodes a Wnt-related gene (Rijsewik et al., Cell, 50:649-657 (1987))and wg mutations alter the pattern of embryonic ectoderm, neurogenesis,and imaginal disc outgrowth. Morata and Lawerence, Dev. Biol.,56:227-240 (1977); Baker, Dev. Biol., 125:96-108 (1988); Klingensmithand Nusse, Dev. Biol., 166:396414 (1994). In Caenorhabditis elegans,lin-44 encodes a Wnt homolog which is required for asymmetric celldivisions. Herman and Horvitz, Development, 120:1035-1047(1994).Knock-out mutations in mice have shown Wnts to be essential for braindevelopment (McMahon and Bradley, Cell, 62:1073-1085 (1990); Thomas andCappechi, Nature, 346:847-850 (1990)), and the outgrowth of embryonicprimordia for kidney (Stark et al., Nature, 372:679-683 (1994)), tailbud (Takada et al., Genes Dev., 8:174-189 (1994)), and limb bud. Parrand McMahon, Nature, 374:350-353 (1995). Overexpression of Wnts in themammary gland can result in mammary hyperplasia and tumors, ((McMahon,supra (1992); Nusse and Varmius, H. E., Cell 69:1073-1087 (1992)), andprecocious alveolar development. Bradbury et al., Dev. Biol.,170:553-563 (1995). Moreover, constitutive expression of Wnt-4 in virginhosts of transplanted mammary epithelium resulted in highly branchedtissue, similar to a pregnancy-like growth pattern. Bradbury et al.,Dev. Biol. 170:553-563 (1995).

[0056] The Wnt/Wg signal transduction pathway plays an important role inthe biological development of the organism and has been implicated inseveral human cancers. This pathway also includes the tumor suppressorgene, APC. Mutations in the APC gene are associated with the developmentof sporadic and inherited forms of human colorectal cancer. For example,elevated levels of Wnt-2 have been observed in colorectal cancers.Vider, B-Z. et al., Oncogene 12:153-158 (1996).

[0057] 22. PRO1197

[0058] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1197.

[0059] 23. PRO1293

[0060] Immunoglobulins are antibody molecules, the proteins thatfunction both as receptors for antigen on the B-cell membrane and as thesecreted products of the plasma cell. Like all antibody molecules,immunoglobulins perform two major functions:they bind specifically to anantigen and they participate in a limited number of biological effectorfunctions. Therefore, new members of the Ig superfamily and fragmentsthereof are always of interest. Molecules which act as receptors byvarious viruses and those which act to regulate immune function are ofparticular interest. Also of particular interest are those moleculeswhich have homology to known Ig family members which act as virusreceptors or regulate immune function. Thus, molecules having homologyto Ig superfamily members and fragments thereof (i.e., heavy and lightchain fragments) are of particular interest.

[0061] We herein describe the identification and characterization ofnovel polypeptides having homology to an immunoglobulin heavy chainvariable region protein, designated herein as PRO1293 polypeptides.

[0062] 24. PRO1380

[0063] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1380.

[0064] 25. PRO1265

[0065] The identification of novel secreted proteins involved inphysiological and metabolic pathways is of interest because of theirpotential use as pharmaceutical agents. Of particular interest is theidentification of novel polypeptides that are potentially involved inimmune response and inflammation mechanisms. A novel polypeptide hasrecently been identified that is expressed in mouse B cells in responseto IL4. The gene encoding this polypeptide is referred to asinterleukin-four induced gene 1, or “Fig1” (Chu et al. Proc. Natl. Acad.Sci (1997) 94(6):2507-2512).

[0066] 26. PRO1250

[0067] Long chain fatty acid CoA ligase is an enzymatic protein thatfunctions to ligate together long chain fatty acids, a function thatplays important roles in a variety of different physiological processes.Given the importance of this enzymatic protein, efforts are currentlybeing undertaken to identify novel long chain fatty acid CoA ligasehomologs. We herein describe the identification and characterization ofnovel polypeptides having homology to long chain fatty acid CoA ligase,designated herein as PRO1250 polypeptides.

[0068] 27. PRO1475

[0069] N-acetylglucosaminyltransferase proteins comprise a family ofenzymes that provide for a variety of important biological functions inthe mammalian organism. As an example,UDP-N-acetylglucosaniine:alpha-3-D-mannosidebeat-1,2-N-acetylglucosaminyltransferase I is an enzymatic protein thatcatalyzes an essential first step in the conversion of high-mannoseN-glycans to hybrid and complex N-glycans (Sarkar et al., Proc. Natl.Acad. Sci. USA. 88:234-238 (1991). Given the obvious importance of theN-acetylglucosaminyltransferase enzymes, there is significant interestin the identification and characterization of novel polypeptides havinghomology to an N-acetylglucosaminyltransferase protein. We hereindescribe the identification and characterization of novel polypeptideshaving homology to an N-acetylglucosaminyltransferase protein,designated herein as PRO1475 polypeptides.

[0070] 28. PRO1377

[0071] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1377.

[0072] 29. PRO1326

[0073] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1326.

[0074] 30. PRO1249

[0075] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1249.

[0076] 31. PRO1315

[0077] Many important cytokine proteins have been identified andcharacterized and shown to signal through specific cell surface receptorcomplexes. For example, the class II cytokine receptor family (CRF2)includes the interferon receptors, the interleukin-10 receptor and thetissue factor CRFB4 (Spencer et al., J. Exp. Med. 187:571-578 (1998) andKotenko et al., EMBO J. 16:5894-5903 (1997)). Thus, the multitude ofbiological activities exhibited by the various cytokine proteins isabsolutely dependent upon the presence of cytokine receptor proteins onthe surface of target cells. There is, therefore, a significant interestin identifying and characterizing novel polypeptides having homology toone or more of the cytokine receptor family. We herein describe theidentification and characterization of a novel polypeptide havinghomology to cytokine receptor family-4 proteins, designated herein asPRO1315 polypeptides.

[0078] 32. PRO1599

[0079] Granzyme M is a natural killer cell serine protease. The humangene is 7.5 kilobases, has an exon-intron structure identical to otherserine proteases, and is closely linked to the serine protease genecluster on chromosome 19p13.3. (Pilat et al., Genomics, 24:445-450(1994)). Granzyme M has been found in two human natural killer leukemiacell lines, unstimulated human peripheral blood monocytes and untreatedpurified CD3-CD56+ large granular lymphocytes. (Smyth et al., J.Immunol., 151:6195-6205 (1993)).

[0080] 33. PRO1430

[0081] Reductases form a large class of enzymatic proteins found in avariety of mammalian tissues and play many important roles for theproper functioning of these tissues. They are antioxidant enzymes thatcatalyze the conversion of reactive oxygen species to water. Abnormallevels or functioning of reductases have been implicated in severaldiseases and disorders including strokes, heart attacks, oxidativestress, hypertension and the development of both benign and malignanttumors. For example, malignant prostate epithelium may have loweredexpression of such antioxidant enzymes [Baker et al., Prostate32(4):229-233 (1997)]. International patent application no. WO9622360-A1describes a prostate specific reductase that is useful for diagnosingand treating prostate cancer and screening new antagonists. Inhibitorsof alpha-reductase have been used in the treatment of benign prostatichyperplasia (Anderson, Drugs Aging (1996) 6(5):388-396). For thesereasons, the identification of new members of the reductase family hasbeen of interest for the treatment and diagnosis of cancers and otherdiseases and disorders.

[0082] 34. PRO1374

[0083] Prolyl 4-hyroxylase (P4HA) catalyzes the formation of4-hydroxyproline in collagens. Annunen, et al., J. Biol. Chem.,272(28):17342-17348 (1997); Helaakoski, et al., PNAS USA,92(10):4427-4431 (1995); and Hopkinson, et al., Gene, 149(2):391-392(1994). This enzyme and molecules related thereto are of interest.

[0084] 35. PRO1311

[0085] The tetraspan family of proteins, also referred to as the“transmembrane 4 (TM4) superfamily”, are proposed to have an organizingfunction in the cell membrane. It is believed that they interact withlarge molecular complexes and function in such diverse activities ascell adhesion, activation and differentiation (see Maecker et al. FASEB(1997) 11:428-442). Accordingly, the identification of new members ofthe tetraspan family of proteins is of interest. Efforts are beingundertaken by both industry and academia to identify new, nativetransmembrane proteins. Many efforts are focused on the screening ofmammalian recombinant DNA libraries to identify the coding sequences fornovel receptor proteins.

[0086] 36. PRO1357

[0087] Ebnerin is a cell surface protein associated with von Ebnerglands in mammals. Efforts are being undertaken by both industry andacademia to identify new, native proteins and specifically those whichpossess sequence homology to cell surface proteins such as ebnerin orother salivary gland-associated proteins. Many of these efforts arefocused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel receptor proteins. We hereindescribe the identification of novel polypeptides having significanthomology to the von Ebner minor salivary gland-associated protein,designated herein as PRO1357 polypeptides.

[0088] 37. PRO1244

[0089] One type of transmembrane protein that has received attention isimplantation-associated uterine protein. Deficiencies or abnormalitiesof this protein may be a cause of miscarriage. Therefore, theidentification and characterization of implantation-associated proteinsis of interest.

[0090] 38. PRO1246

[0091] Bone-related sulphatase is an enzymatic protein that has beenshown to degrade sulphate groups of proteoglycan sugar chains in bonetissue (Australian Patent Publication No. AU 93/44921-A, March 3, 1994).Because of its specific sulphatase activity, it has been suggested thatbone-related sulphatase may find use in the treatment of bone metabolicdiseases. As such, there is significant interest in identifying andcharacterizing novel polypeptides having sequence similarity tobone-related sulphatase. We herein describe the identification andcharacterization of novel polypeptides having homology to bone-relatedsulphatase, designated herein as PRO1246 polypeptides.

[0092] 39. PRO1356

[0093] Clostridium perfringens enterotoxin (CPE) is considered to be thevirulence factor responsible for causing the symptoms of C. perfringenstype A food poisoning and may also be involved in other human andveterinary illnesses (McClane, Toxicon. 34:1335-1343 (1996)). CPEcarries out its adverse cellular functions by binding to anapproximately 50 kD cell surface receptor protein designated theClostridium perfringens enterotoxin receptor (CPE-R) to form anapproximately 90,000 kD complex on the surface of the cell. cDNAsencoding the CPE-R protein have been identified characterized in bothhuman and mouse (Katahira et al., J. Cell Biol. 136:1239-1247(1997) andKatahira et al., J. Biol. Chem. 272:26652-26658 (1997)). Since the CPEtoxin has been reported to cause a variety of illnesses in mammalianhosts and those illnesses are initiated by binding of the CPE toxin tothe CPE-R, there is significant interest in identifying novel CPE-Rhomologs. We herein describe the identification and characterization ofnovel polypeptides having homology to the CPE-R, designated herein asPRO1356 polypeptides.

[0094] 40. PRO1275

[0095] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1275.

[0096] 41. PRO1274

[0097] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1274.

[0098] 42. PRO1412

[0099] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1412.

[0100] 43. PRO1557

[0101] The identification of secretory proteins that play roles inneural development are of interest. Such proteins may find use in theunderstanding of and possible treatment of neurological diseases anddisorders. Chordin protein, which has been isolated from Xenopus, is apotent dorsalizing factor that regulates cell-cell interactions in theorganizing centers of Xenopus head, trunk and tail development (Sasai etal., (1994) Cell 79(5):779-790; see also Mullins, (1998) Trends Genet.14(4)127-129; and Kessel et al. (1998)) Trends Genet. 14(5):169-171). Itmay be used as a component of culture medium for culturing nerve andmuscle cells, and may have use in the treatment of neurodegenerativediseases and neural injury (U.S. Pat. No. 5,679,783).

[0102] 44. PRO1286

[0103] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1286.

[0104] 45. PRO1294

[0105] The extracellular mucous matrix of olfactory neuroepithelium is ahighly organized structure in intimate contact with chemosensory ciliathat house the olfactory transduction machinery. The major proteincomponent of this extracellular matrix is olfactomedin, a glycoproteinthat is expressed in olfactory neuroepithelium and which formintermolecular disulfide bonds so as to produce a polymer (Yokoe et al.,Proc. Natl. Acad. Sci. USA 90:465514659 (1993), Bal et al., Biochemistry32:1047-1053 (1993) and Snyder et al., Biochemistry 30:9143- 9153(1991)). It has been suggested that olfactomedin may influence themaintenance, growth or differentiation of chemosensory cilia on theapical dendrites of olfactory neurons. Given this important role, thereis significant interest in identifying and characterizing novelpolypeptides having homology to olfactomedin. We herein describe theidentification and characterization of a novel polypeptide havinghomology to olfactomedin protein.

[0106] We herein describe the identification and characterization ofnovel polypeptides having homology to olfactomedin protein, designatedherein as PRO1294 polypeptides.

[0107] 46. PRO1347

[0108] Butyrophilin is a milk glycoprotein that constitutes more than40% of the total protein associated with the fat globule membrane inmammalian milk. Expression of butyrophilin mRNA has been shown tocorrelate with the onset of milk fat production toward the end pregnancyand is maintained throughout lactation. Butyrophilin has been identifiedin bovine, murine and human (see Taylor et al., Biochim. Biophvs. Acta1306:14 (1996), Ishii et al., Biochim. Biophys. Acta 1245:285-292(1995), Mather et al., J. Dairy Sci. 76:3832-3850 (1993), Ogg, et al.,Mamm. Genome, 7(12):900-905 (1996), Sato, et al., J. Biochem.,117(1):147-157 (1995) and Banghart et al., J. Biol. Chem. 273:4171-4179(1998)) and is a type I transmembrane protein that is incorporated intothe fat globulin membrane. It has been suggested that butyrophilin mayplay a role as the principle scaffold for the assembly of a complex withxanthine dehydrogenase/oxidase and other proteins that function in thebudding and release of milk-fat globules from the apical surface duringlactation (Banghart et al., suDra . Given that butyrophilin plays a rolein mammalian milk production, there is substantial interest inidentifying novel butyrophilin homologs.

[0109] 47. PRO1305

[0110] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1305.

[0111] 48. PRO1273

[0112] The lipocalin protein family is a large group of smallextracellular proteins. The family demonstrates great diversity at thesequence level; however, most lipocalins share characteristic conservedsequence motifs. Lipocalins are known to be involved in retinoltransport, invertebrate cryptic coloration, olfaction and pheromonetransport, and prostaglandin synthesis. The lipocalins have also beenimplicated in the regulation of cell homoeostasis and the modulation ofthe immune response, and as carrier proteins, to act in the generalclearance of endogenous and exogenous compounds. Flower, Biochem. J.,318(Pt 1):1-14 (1996); Flower, FEBS Lett., 354(1):7-11 (1994). Thus,novel members of the lipocalin protein family are of interest.

[0113] 49. PRO1302

[0114] CD33 is a cell-surface protein that is a member of thesialoadhesin family of proteins that are capable of mediatingsialic-acid dependent binding with distinct specificities for both thetype of sialic acid and its linkage to subterminal sugars. CD33 isspecifically expressed in early myeloid and some monocyte cell lineagesand has been shown to be strongly associated with various myeloid tumorsincluding, for example, acute non-lymphocytic leukemia (ANLL). As such,CD33 has been suggested as a potential target for the treatment ofcancers associated with high level expression of the protein. One CD33homolog (designated CD33L) is described in Takei et al., Cytogenet. CellGenet. 78:295-300 (1997). Another study describes the use of CD33monoclonal antibodies in bone marrow transplantation for acute myeloidleukemia. Robertson, et al., Prog. Clin. Biol. Res., 389:47-63 (1994).

[0115] Moreover, studies have reported that members of the sialoadhesionfamily contribute to a range of macrophage functions, both under normalconditions as well as during inflammatory reactions. Crocker, et al.,Glycoconi. J., 14(5):601-609 (1997). Moreover, these proteins areassociated with diverse biological processes, i.e., hemopoiesis,neuronal development and immunity. Kelm, et al., Glycoconi. J.,13(6):913-926 (1996). Thus, novel polypeptides related to CD33 bysequence identity are of interest.

[0116] 50. PRO1283

[0117] Olfactory reception occurs via the interaction of odorants withthe chemosensory cilia of the olfactory receptor cells located in thenasal epithelium. Based upon the diversity of nasalepithelial-associated odorant binding proteins, the mammalian olfactorysystem is capable of recognizing and discriminating a large number ofdifferent odorant molecules. In this regard, numerous different odorantbinding proteins and their encoding DNA have recently been identifiedand characterized (Dear et al., Biochemistry 30:10376-10382 (1991),Pevsner et al., Science 241:336-339 (1988), Buck et al., Cell 65:175-187(1991) and Breer et al., J. Receipt. Res. 13:527-540 (1993)). Becausestudy of the mechanisms of odorant detection by the mammalian olfactorysystem are of interest, there is significant interest in identifyingnovel odorant binding protein. We herein describe the identification andcharacterization of novel polypeptides having homology to odorantbindingproteins, designated herein as PRO1283 polypeptides.

[0118] 51. PRO1279

[0119] Proteases are enzymatic proteins which are involved in a largenumber of very important biological processes in mammalian andnon-mammalian organisms. Numerous different protease enzymes from avariety of different mammalian and non-mammalian organisms have beenboth identified and characterized, including the serine proteases whichexhibit specific activity toward various serine-containing proteins. Themammalian protease enzymes play important roles in biological processessuch as, for example, protein digestion, activation, inactivation, ormodulation of peptide hormone activity, and alteration of the physicalproperties of proteins and enzymes.

[0120] Neuropsin is a novel serine protease whose MRNA is expressed inthe central nervous system. Mouse neuropsin has been cloned, and studieshave shown that it is involved in the hippocampal plasticity. Neuropsinhas also been indicated as associated with extracellular matrixmodifications and cell migrations. See, generally, Chen, et al.,Neurosci., 7(2):5088-5097 (1995) and Chen, et al., J. Histochem.Cytochem., 46:313-320 (1998).

[0121] We herein describe the identification and characterization ofnovel polypeptides having homology to neuropsin protein, designatedherein as PRO1279 polypeptides.

[0122] 52. PRO1304

[0123] The immunophilins are a family of proteins that function asreceptors for immunosuppressant drugs, such as cyclosporin A, FK506, andrapamycin. The immunophilins occur in two separate classes, (1) theFK506-binding proteins (FKBPs), which bind to FK506 and rapamycin, and(2) the cyclophilins, which bind to cyclosporin A. With regard to theFK506-binding proteins, it has been reported that the FK506/FKBP complexfunctions to inhibit the activity of the serine/threonine proteinphosphatase 2B (calcineurin), thereby providing immunosuppressantactivity (Gold, Mol. Neurobiol. 15:285-306 (1997)). It has also beenreported that the FKBP immunophilins are found in the mammalian nervoussystem and may be involved in axonal regeneration in the central nervoussystem through a mechanism that is independent of the process by whichimmunosuppression is achieved (Gold, supra). Thus, there is substantialinterest in identifying novel polypeptides having homology to the FKBPimmunophilins.

[0124] We herein describe the identification and characterization ofnovel polypeptides having homology to FK506 binding protein, designatedherein as PRO1304 polypeptides.

[0125] 53. PRO1317

[0126] There is considerable interest in the identification of moleculeswhose expression is increased upon stimulation of leukocyte populationsbecause insights into the structure and function of these molecules maylead to further understanding of the intracellular and intercellularevents that accompany activation. One such molecule, CD97, a cellsurface antigen that is rapidly upregulated upon activation onlymphocytes, has recently been the subject of several publications (seeEichler et al. in Tissue Antigens (1997) 50(5):429-438; Aust et al.,Cancer Res. (1997) 57(9):1798-1806). Leukocytes strongly positive forCD97 are concentrated at sites of inflammation relative to CD97expression in normal lymphoid tissue. A soluble subunit of CD97,CD97alpha, has been found in the body fluids from inflamed tissues (Grayet al. J. Immunol. (1996) 157(12):5438-5447).

[0127] 54. PRO1303

[0128] Proteases are enzymatic proteins which are involved in a largenumber of very important biological processes in mammalian andnon-mammalian organisms. Numerous different protease enzymes from avariety of different mammalian and non-mammalian organisms have beenboth identified and characterized, including the serine proteases whichexhibit specific activity toward various serine-containing proteins. Themammalian protease enzymes play important roles in biological processessuch as, for example, protein digestion, activation, inactivation, ormodulation of peptide hormone activity, and alteration of the physicalproperties of proteins and enzymes.

[0129] Neuropsin is a novel serine protease whose mRNA is expressed inthe central nervous system. Mouse neuropsin has been cloned, and studieshave shown that it is involved in the hippocampal plasticity. Neuropsinhas also been indicated as associated with extracellular matrixmodifications and cell migrations. See, generally, Chen, et al., J.Neurosci., 7(2):5088-5097 (1995) and Chen, et al., J. Histochem.Cytochem., 46:313-320 (1998). Other studies have reported that kindlinginduces neuropsin MRNA in the mouse brain. Okabe, et al., Brain Res.,728(1):116-120 (1996). Additionally, a study has reported thatgeneration of reactive oxygen species has an important role in neuropsintranscript in the limbic areas which might be related to the disturbancein avoidance learning. Akita, et al., Brain Res., 769(1):86-96 (1997).Thus, neuropsins, and related proteins and agents, including agonistsand antagonists are of interest.

[0130] 55. PRO1306

[0131] There is much interest in the identification of proteins thatplay roles in mammalian disease and disorders which could lead to newmethods of treatment. A macrophage polypeptide, daintain/allograftinflammatory factor 1 (daintain/AIF1), has been identified in thepancreas of prediabetic rats, and has been determined to have a directeffect on insulin secretion. When injected intravenously in mice in lowdoses, daintain/AIF1 doses inhibited glucose-stimulated insulinsecretion with a concomitant impairment of glucose elimination. Athigher doses, daintain/AIF1 potentiated glucose-stimulated insulinsecretion and enhanced glucose elimination. Thus, it was suggested thatdaintain/AIF1 may have a role in connection with the pathogenesis ofinsulin-dependent diabetes mellitus (Chen et al. Proc. Natl Acad. Sci.(1997) 94(25):13879-13884). AIF-1 has also been implicated in both ratand human allogenic heart transplant rejection (Utans et al.Transplantation (1996) 61(9):1387-1392), and may play a role inmacrophage activation and function (Utans et al. J. Clin. Invest. (1995)95(6):2954-2962).

[0132] 56. PRO1336

[0133] Protein-protein interactions include receptor and antigencomplexes and signaling mechanisms. As more is known about thestructural and functional mechanisms underlying protein-proteininteractions, protein-protein interactions can be more easilymanipulated to regulate the particular result of the protein-proteininteraction. Thus, the underlying mechanisms of protein-proteininteractions are of interest to the scientific and medical community.

[0134] Leucine-rich proteins are known to be involved in protein-proteininteractions. A study has been reported on leucine-rich proteoglycanswhich serve as tissue organizers, orienting and ordering collagenfibrils during ontogeny and are involved in pathological processes suchas wound healing, tissue repair, and tumor stroma formation. Iozzo, R.V., Crit. Rev. Biochem. Mol. Biol., 32(2):141-174 (1997). Others studiesimplicating leucine rich proteins in wound healing and tissue repair areDe La Salle, C., et al., Vouv. Rev. Fr. Hematol. (Germany),37(4):215-222 (1995), reporting mutations in the leucine rich motif in acomplex associated with the bleeding disorder Bernard-Soulier syndromeand Chlemetson, K. J., Thromb. Haemost. (Germany), 74(1):111-116 (July1995), reporting that platelets have leucine rich repeats.

[0135] Another protein of particular interest which has been reported tohave leucine-rich repeats is the slit protein which has been reported tobe useful in treating neuro-degenerative diseases such as Alzheimer'sdisease, nerve damage such as in Parkinson's disease, and for diagnosisof cancer, see, Artavanistsakonas, S. and Rothberg, J. M., WO9210518-A1by Yale University. The slit protein has been characterized and reportedto be secreted by glial cells and involved in the formation of axonalpathways in Drosophila as well as the mediation of extracellular proteininteractions. Wharton and Crews, Mech. Dev., 40(3):141-154 91993);Rothberg and Artavanis-Tsakonas, J. Mol. Biol., 227(2):367-370 (1992);Rothberg, et al., Genes Dev., 4(12A):2169-2187 (1990); and Rothberg, etal., Cell, 55(6):1047-1059 (1988).

[0136] 57. PRO1278

[0137] Lysozymes are secreted enzymes that preferentially hydrolyze the[beta]-1,4glucosidic linkages between N-acetylmuramic acid andN-acetylgucosamine which occur in the mucopeptide cell wall structure ofcertain microoganisms. Lysozyme is of widespread distribution in animalsand plants. It has been found in mammalian secretions and tissuesincluding saliva, tears, milk, cervical mucus, leucocytes, kidneys, etc.The identification of new members of the lysozyme family of proteins isof interest because of the variety of roles lysozymes play in metabolicfunction and dysfunction. Abnormal levels of lysozymes have beenimplicated in various disease states. Lysozymes have been reported tohave anti-microbial, analgesic, and antinociceptive properties.Additional characteristics and possible uses of lysozymes are describedin U.S. Pat. No. 5,618,712.

[0138] 58. PRO1298

[0139] Glycosylation can determine the fate of a protein, for example,whether it is secreted or not. Also, glycoproteins play many structuraland functional roles, particularly as part of the cell membrane.Therefore, glycosylation is of interest. Studies have reported on thegrowth-related coordinate regulation of the early N-glycosylation genesin yeast. Kukuruzinska and Lennon, Glycobiology, 4(4):437-443 (1994).Moreover, the relationship between protein glycosylation and fattyacylation of glycoproteins was studied in the wild-type andasparagine-linked glycosylation-deficient mutants in yeast. Appukuttan,FEBS Lett., 255(1):139-142 (1989). The biosynthesis of asparagine-linkedoligosaccharides in yeast was also studied using a mutant. Jackson, etal., Glvcobiologv, 3(4):357-364 (1993). Yeast mutants deficient inprotein glycosylation have also been reported in Huffacker and Robbins,PNAS, 80(24):7466-7470 (1983).

[0140] 59. PRO1301

[0141] Cytochrome P450 proteins form a large class of monooxygenaseenzymes involved in hydroxylation. Hydroxylation reactions are importantin the synthesis of cholesterol and steroid hormones. Enzymes of thecytochrome P450 family play an important role in the metabolismendogenous compounds such as arachidonic acid. These enzymes are alsoimportant in the metabolism of foreign substances such as theelimination of drugs from the body [see, for example, Peterson, Aliment.Pharmacol. Ther., 9:1-9 (1995).]. In addition, metabolites generatedthrough the cytochrome P450 pathway may play a role in carcinogenesis,blood pressure regulation and renal function [see, for example, Rahmanet al., Am. J. Hypertens., 10:356-365 (1997)].

[0142] 60. PRO1268

[0143] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1268.

[0144] 61. PRO1269

[0145] Granulocytes, the most common type of white blood cell, have theability to mediate immunologic cytotoxicity against tumor cells andmicroorganisms. Accordingly, there has been interest in identifyingvarious factors that are produced by these cells because of theirpotential use as pharmaceutical agents. Patent publication no.WO9729765-A1, to Selsted, describes the identification of granulocytepeptide A which was isolated from bovine and murine granulocytes.Several uses for this peptide were identified including, a therapeuticuse, use as an agricultural agent, use as a preservative for food, anduse as a water treatment agent.

[0146] 62. PRO1327

[0147] Neurexophilin is a protein that was discovered as a neuronalglycoprotein that was copurified with neurexin I alpha during affinitychromatography on immobilized alpha-latrotoxin (Missler et al., J.Neurosci. 18:3630-3638 (1998)). Recent data has shown that the mammalianbrain contains four genes for neurexophilins the products of which sharea common structure composed of five domains:(1) an N-terminal signalpeptide, (2) a variable N-terminal domain, (3) a highly conservedcentral domain that is N-glycosylated, (4) a short linker region and (5)a conserved C-terminal domain that is cysteine-rich (Missler et al.,supra). These data further demonstrate that the neurexophilins areproteolytically processed after synthesis and bind to alpha-neurexins.The structure and characteristics of neurexophilins indicate that theymay function as neuropeptides that may signal via alpha-neurexins.Therefore, there is significant interest in identifying andcharacterizing novel polypeptides having homology to the neurexophilins.

[0148] We herein describe the identification and characterization ofnovel polypeptides having homology to neurexophilin protein, designatedherein as PRO1327 polypeptides.

[0149] 63. PRO1382

[0150] Cerebellin is a secreted, postsynaptic neuroprotein foundthroughout the brain. The highest concentrations of this protein havebeen found in the cerebellum. It has also been detected in thepituitary, spinal cord, and adrenal glands (Satoh et al. J. Endocrinol.(1997) 15491):27-34). The feasibility of using cerebellum as aquantifiable marker for the investigation of the maturation of Purkinjecells of the cerebellum and to chart neurodevelopment has been reported(see Slemmon et al. Proc. Natl. Acad. Sci (1985) 82(20):7145-7148).Significantly decreased levels of cerebellin have been found in humanbrains obtained in post-mortem studies from patients withspinocerebellar degeneration, olivopontocerebellar atrophy (OPCAQ) andShy-Drager syndrome, suggesting that cerebellin plays importantpathophysiological roles in these cerebellar diseases (Mizuno et al.Brain Res. (1995) 686(1):115-118; Mizuno et al. No To Shinkei (1995)47(11):1069-1074). In view of the importance of cerebellin inneurodevelopment and in neurological diseases and disorders, theidentification and characterization of members of this protein family isof interest (see also Yiangou et al. J. Neurochem (1989) 53(3):886-889and Mugnaini et al. Synapnse (1988) 2(2):125-138).

[0151] 64. PRO1328

[0152] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1328.

[0153] 65. PRO1325

[0154] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1325.

[0155] 66. PRO1340

[0156] Cadherins are known as the principal mediators of homotypiccellular recognition and play a demonstrated role in the morphogenicdirection of tissue development. Cadherins are a diverse family ofproteins that have been identified in various tissues including nervoustissue (Suzuki et al., Cell Regul., 2:261-270 (1991)). Ksp-cadherin is akidney-specific member of the cadherin multigene family (Thomson et al.,Biol. Chem, 270:17594-17601 (1995)). Cadherins are thought to play animportant role in human cancer (Yap, Cancer Invest., 16:252-261 (1998)).

[0157] 67. PRO1339

[0158] Carboxypeptidases are of interest. Carboxypeptidase E appears tobe involved in the biosynthesis of a wide range of peptide hormones.Fricker, Annu. Rev. Physiol., 50:309-321 (1988). This carboxypeptidasehas been associated with obesity. Leiter, J. Endocrinol., 155(2):211-214(1997). Carboxypeptidase M has been reported as being a marker ofmacrophage maturation. Krause, et al., Immunol. Rev., 161:119-127(1998). Human mast cell carboxypeptidase has been reported to beassociated with allergies. Goldstein, et al., Monogr. Allergy,27:132-145 (1990). Carboxypeptidase A2 has also been reported on.Faming, et al., J. Biol. Chem., 266(36):24606-24612 (1991). Othercarboxypeptidases of particular interest which are known in the artinclude human pancreatic carboxypeptidase 2, carboxypeptidase al andcarboxypeptidase B. Therefore, novel members of the carboxypeptidasefamily are of interest.

[0159] 68. PRO1337

[0160] Of particular interest is the identification of blood-relatedproteins which may have potential therapeutic use or may be useful inthe diagnosis of blood-related disorders. Thyroxine-binding globulin(TBG) is synthesized by the liver and secreted into the bloodstream. Itis the principal thyroid hormone transport protein in human serum(Refetoff et al. Horm. Res. (1996) 45(3-5):128-138). High serum levelsof TBG have been found to cause hyperthyroxinaemia (Leahy et al.,Postgrad Med. J. (1984) 60(703):324-327). Accordingly, theidentification and characterization of TBG proteins is of interest (seeFlink et al. Proc. Natl Acad Sci. USA (1986) 83(20):7708-7712; Bartalenaet al. Acta Med. Austriaca, (1988) 15 Suppl 1:12-15), including theidentification of abnormal TBG proteins (see Refetoff, Endocr Rev.(1989) 10(3):275-293). Many efforts are focused on the screening ofmammalian recombinant DNA libraries to identify the coding sequences fornovel secreted proteins. Examples of screening methods and techniquesare described in the literature [see, for example, Klein et al., Proc.Natl. Acad. Sci., 93:7108-7113 (1996); U.S. Pat. No. 5,536,637)].

[0161] 69. PRO1342

[0162] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1342.

[0163] 70. PRO1343

[0164] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the coding30 sequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1343.

[0165] 71. PRO1480

[0166] Semaphorins are a large family of transmembrane and secretedproteins, many of which are expressed in the nervous system. Members ofthe semaphorin family include both ligands and receptors. (Eckhardt etal., Mol. Cell. Neurosci., 9:409-419 (1997)). Studies have revealed arole for semaphorins in embryonic motor and central nervous system axonguidance and synapse formation. (Catalano et al., Mol. Cell. Neurosci.,11: 173-182 (1998); Kitsukawa et al., Neuron, 19:995-1005 (1997); Yu etal., Neuron, 20:207-220 (1998)). Semaphorins have been shown to induceneuronal growth cone collapse and alter their pathway in vivo. (Shoji etal., Development, 125:1275-1283 (1998)). Members of the semaphorinfamily have been shown to be immunologically active, inducing cytokineproduction in human monocytes. (Comeau et al., Immunity, 8:473-482(1998)). Semaphorins may also play a role in cancer. Expression of amouse semaphorin gene is known to correlate with metastatic ability inmouse tumor cell lines. (Christensen et al., Cancer Res., 58:1238-1244(1998)).

[0167] 72. PRO1487

[0168] Fringe is a protein which specifically blocks serrate-mediatedactivation of notch in the dorsal compartment of the Drosophila wingimaginal disc (see Fleming et al., Development, 124(15):2973-81 (1997);Wu et al. Science (1996) 273(5273):355-358). Fringe protein is alsoinvolved in vertebrate development where a thickening of the apicalectodermal ridge essential for limb bud outgrowth involves aninteraction between dorsal cells that express radical fringe and thosethat do not (see Wolpert, L. Philos Trans R Soc Lond B Biol Sci 1998)353(1370):871-875; Kengaku et al. Science (1998) 280(5367):1274-1277;Cohen et al. Nat. Genet. (1997) 16(3):283-288; Johnston et al.Development (1997) 124(11):2245-2254; Laufer et al. Nature (1997)386(6623):366-373; Rodriguez-Esteban et al. Nature (1997)386(6623):360-366;). ). Therefore, fringe protein is of interest forboth its role in development as well as its ability to regulate serrate,particularly serrate's signaling abilities. Also of interest are novelpolypeptides which may have a role in development and/or the regulationof serrate-like molecules. Of particular interest are novel polypeptideshaving homology to fringe protein.

[0169] 73. PRO1418

[0170] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1418.

[0171] 74. PRO1472

[0172] Butyrophilin is a milk glycoprotein that constitutes more than40% of the total protein associated with the fat globule membrane inmammalian milk. Expression of butyrophilin mRNA has been shown tocorrelate with the onset of milk fat production toward the end pregnancyand is maintained throughout lactation. Butyrophilin has been identifiedin bovine, murine and human (see Taylor et al., Biochim. Biophys. Acta1306:14 (1996), Ishii et al., Biochim. Biophys. Acta 1245:285-292(1995), Mather et al., J. Dairy Sci. 76:3832-3850 (1993), Ogg, et al.,Mamm. Genome, 7(12):900-905 (1996), Sato, et al., J. Biochem.,117(1):147-157 (1995) and Banghart et al., J. Biol. Chem. 273:4171-4179(1998)) and is a type I transmembrane protein that is incorporated intothe fat globulin membrane. It has been suggested that butyrophilin mayplay 35 a role as the principle scaffold for the assembly of a complexwith xanthine dehydrogenase/oxidase and other proteins that function inthe budding and release of milk-fat globules from the apical surfaceduring lactation (Banghart et al., supra). Given that butyrophilin playsa role in mammalian milk production, there is substantial interest inidentifying novel butyrophilin homologs. Members of the butyrophilinfamily are further described in Tazi-Ahnini, et al., Immunogenetics,47(1):55-63 (1997); Davey, et al., Gene, 199(1-2):57-62 (1997); and

[0173] Mather and Jack, J. Dairy Sci., 76(12):3832-3850 (1993).

[0174] 75. PRO1461

[0175] Proteases are enzymatic proteins which are involved in manybiological processes in mammalian and non-mammalian organisms includingdigestion, protein activation and inactivation, modulation of peptidehormone activity, and alteration of the physical properties of proteinsand enzymes. Serine proteases comprise a large class of enzymes thatexhibit specific activity toward various serine-containing proteins.Trypsin, which is synthesized by the pancreas and secreted to the smallintestine, is a well-characterized serine protease that hydrolyzespeptide bonds of ingested proteins. Trypsin-like proteases have beencharacterized that are cell-surface proteins (see Farley et al. BiochimBiophys Acta (1993) 173(3) :350-352; and Leytus et al. Bioch (1988)27(3)1067-1074). It is believed that some of these trypsin-like proteinsmay be synthesized as a membrane-bound precursor which matures to asoluble and active protease (Yamaoka etal J. Biol. Chem (1998)273(19):11895-11901).

[0176] Because of there importance in metabolism and other enzymaticprocesses, efforts are being undertaken by both industry and academia toidentify new, native serine-like proteases. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel receptor proteins.

[0177] 76. PRO1410

[0178] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1410.

[0179] 77. PRO1568

[0180] The tetraspanin (or tetraspan) family of proteins has grown toinclude approximately twenty known genes from various species. Thetetraspanins are four transmembrane domain membrane-bound moleculeswhich include for example, CD81, CD82, CD9, CD63, CD37 and CD53. Many ofthese proteins have a flair for promiscuous associations with othermolecules, including lineage-specific proteins, integrins, and othertranspanins. In terms of function, they are involved in diverseprocesses such as cell activation and proliferation, adhesion andmotility, differentiation and cancer. One study has proposed that thesefunctions may all relate to their ability to act as “molecularfacilitators”, grouping specific cell-surface proteins and thusincreasing the formation and stability of functional signalingcomplexes. Maecker, et al., FASEB, 11(6):42842 (1997). Another studyconcludes that they are responsible for changes in cell morphology,cell-ECM adhesion and cell-signaling. Skubitz, et al., J. Immunology,157:3617-3626 (1996). Thus, new members of this family are of interest.

[0181] 78. PRO1570

[0182] Proteases are enzymatic proteins which are involved in manybiological processes in mammalian and non-mammalian organisms includingdigestion, protein activation and inactivation, modulation of peptidehormone activity, and alteration of the physical properties of proteinsand enzymes. Serine proteases comprise a large class of enzymes thatexhibit specific activity toward various serine-containing proteins.Trypsin, which is synthesized by the pancreas and secreted to the smallintestine, is a well-characterized serine protease that hydrolyzespeptide bonds of ingested proteins. Trypsin-like proteases have beencharacterized that are cell-surface proteins (see Farley etal. BiochimBiophys Acta (1993) 173(3):350-352; and Leytus etal. Biochemistry (1988)27(3):1067-1074). It is believed that some of these trypsin-likeproteins may be synthesized as a membrane-bound precursor which maturesto a soluble and active protease (Yamaoka et al. J. Biol. Chem (1998)273(19):11895-11901).

[0183] Of particular interest are human colon carcinoma derived serineproteases SP59, SP60 and SP67 which may be useful to screen for specificinhibitors or modulators to use in treatment of associated diseasestates and disorders related to these proteins. In Japanese patentJ09149790-A, SP60 is reported to be identified, having accession numberP_W22986 and 233 amino acids.

[0184] 79. PRO1317

[0185] Members of the semaphorin family of glycoproteins play importantroles in the developing nervous system, and more particularly in axonalguidance. Semaphorins have been identified in the human immune system,where they are believed to play functional roles including B-cellsignaling (Hall et al. Proc. Natl. Acad. Sci (1996) 93(21):11780-50). Ahuman semaphorin gene, useful in the diagnosis of nervous system animmune disorders, is disclosed in Japanese Pat. No. J10155490-A,published Jun. 16, 1998. The identification of additional members of thesemaphorin family if of interest.

[0186] 80. PRO1780

[0187] Enzymatic proteins that may be implicated in metabolic diseasesor disorders are of particular interest. The enzymatic addition ofsugars to fat-soluble chemicals is an important process that increasestheir solubility in water and aids in their excretion. In mammals,glucuronic acid is the main sugar that is used to prevent the wasteproducts of metabolism and fat-soluble chemicals from reaching toxiclevels in the body. The UDP glucuronosyltransferases that carry out thisreaction are part of a super family of UDP glycosyltransferases found inanimals, plants and bacteria. In the liver, UDP-glucuronosyltransferaseconjugates bilirubin. There are a number of conditions which affectUDP-glucuronosyltransferase activity resulting in unconjugatedhyperbilirubinemia. These conditions include genetic disorders such asCrigler-Najjar Syndrome (see Jurgen et al., Biochem. J. (1996)314:477-483) and Gilbert syndrome, as well as acquired conditions suchas Lucey-Driscoll Syndrome. Accordingly, the identification of novelmembers of the glucuronosyltransferase family is of interest (see Tukeyet al., J. Biol. Chem. (1993) 268(20):15260-6; and WO9212987-A).

[0188] 81. PRO1486

[0189] The cerebellum contains a hexadecapeptide, termed cerebellin,that is conserved in sequence from human to chicken. Three independent,overlapping cDNA clones have been isolated from a human cerebellum cDNAlibrary that encode the cerebellin sequence. The longest clone codes fora protein of 193 amino acids generally termed precerebellin, or acerebellin precursor. This protein has a significant similarity to theglobular region of the B chain of human complement component Clq. Theregion of relatedness extends approximately over 145 amino acids locatedin the carboxyl terminus of both proteins. Unlike Clq B chain, nocollagen-like motifs are present in the amino-terminal regions ofprecerebellin. It is believed that cerebellin is not liberated fromprecerebellin by the classical dibasic amino acid protealytic cleavagemechanism seen in many neuropeptide precursors. The cerebellin precursorhas been associated with synaptic physiology. Urade, et al., PNAS, USA,88(3):1069-1073 (1991). Cerebellin, its precursor, and relatedmolecules, particularly those having sequence identity with cerebellin,are therefore of interest.

[0190] 82. PRO1433

[0191] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane and receptor proteins. Many effortsare focused on the screening of mammalian recombinant DNA libraries toidentify the coding sequences for novel transmembrane proteins. Weherein describe the identification and characterization of a noveltransmembrane polypeptide designated herein as PRO1433.

[0192] 83. PRO1490

[0193] Enzymatic proteins play important roles in the chemical reactionsinvolved in the digestion of foods, the biosynthesis of macromolecules,the controlled release and utilization of chemical energy, and otherprocesses necessary to sustain life. Acyltransferases are enzymes whichacylate moieties. For example, acyl-glycerol-phosphate acyltransferasescan act on lysophosphatidic acid as a substrate. The lysophosphatidicacid is converted to phophatidic acid and thus plays a role in formingphosphatidylethanolamine found in membranes. See, Brown, et al., PlantMol. Biol., 26(1):211-223 (1994). Moreover,1-acyl-sn-glycerol-3-phosphate acyltransferase (LPAAT) is an enzymaticprotein that shows a preference for medium-chain-length fattyacyl-coenzyme A substrates. See, Knutson et al., Plant Physiol.109:999-1006 (1995)). Thus, acyltransferases play an important role inthe biosynthesis of molecules requiring acylation.

[0194] We herein describe the identification and characterization ofnovel polypeptides having homology to a 1-acyl-sn-glycerol-3-phosphateacyltransferase protein, designated herein as PRO1490 polypeptides.

[0195] 84. PRO1482

[0196] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1482.

[0197] 85. PRO1446

[0198] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1446.

[0199] 86. PRO1558

[0200] Methyltransferase enzymes catalyze the transfer of methyl groupsfrom a donor molecule to an acceptor molecule. Methyltransferase enzymesplay extremely important roles in a number of different biologicalprocesses including, for example, in the electron transport chain in theplasma membrane in prokaryotes and in the inner mitochondrial membranein eukaryotic cells (see, e.g., Barkovich et al., J. Biol. Chem.272:9182-9188 (1997), Dibrov et al., J. Biol. Chem. 272:9175-9181(1997), Lee et al., J. Bacteriol.. 179:1748-1754 (1997) and Marbois etal., Arch. Biochem. Biophys. 313:83-88 (1994)). Methyltransferaseenzymes have been shown to be essential for the biosynthesis ofubiquinone (coenzyme Q) and menaquinone (vitamin K2), both of which 5are essential isoprenoid quinone components of the respiratory electrontransport chain. Given the obvious importance of the methyltransferaseenzymes, there is substantial interest in identifying novel polypeptidehomologs of the methyltransferases. We herein describe theidentification and characterization of a novel polypeptide havinghomology to methyltransferase enzymes, designated herein as PRO1558polypeptides.

[0201] 87. PRO1604

[0202] The identification of novel growth factors is of particularinterest because of the roles they play in inducing cellular growth,proliferation and differentiation in both normal states and abnormalstates. The identification of growth factors that are over- orunder-expressed in abnormal tissues (e.g. tumors) may lead to thedevelopment of diagnostic tools and therapeutic agents. Growth factorshave been isolated from hepatoma-derived cell lines. Hepatoma-derivedgrowth factors have been isolated from mouse (Japanese Pat. No.J09313185-A, published Dec. 9, 1997) and human (Japanese Pat. No.J06343470-A, published Dec. 20, 1994) tissues. A hepatoma-derived growthfactor, isolated from a human hepatoma-derived cell line, has been foundto be ubiquitously expressed in several tumor-derived cell lines, aswell as in normal tissues (Nakamura et al., J. Biol. Chem (1994)269(40):25143-9). The growth factor was determined to be a novelheparin-binding protein that is mitogenic for fibroblasts.

[0203] 88. PRO1491

[0204] The neuronal cell body is usually round like any other cell.However, these cells have structures, also referred to as “processes”,which grow from them to form synaptic connections. Some of theseprocesses carry information away from the cell body; sometimes over verylong distances. These long and thin processes are axons. The axon is athin, static tube. Other processes carry information either towards thecell body, or both towards and away from the cell body. These shorterand usually thicker processes are called dendrites. Both axons anddendrites are called neurites.

[0205] During development and the growth stage of neurons, neurites areformed by means of growth cones. A growth cone is the growing tip of aneurite. The growth cone is flattened and highly motile. It is where newmaterial is added and further extension of the axon originates.Controlling where the growth cone crawls controls were the axon will belaid down and thus where it will be present.

[0206] The growth cone has several definable parts. The thin, flattened,veil-like processes that stick out and retract from the leading edge arecalled lamellipodia. The needle-like processes that stick out andretract from the leading edge are called microspikes or filopodia. Theseare the structures involved in pushing the leading edge of the growthcone forward.

[0207] The accurate navigation of growth cones to their appropriatetargets requires that they recognize and respond to navigational cues intheir immediate environment. Some of these cues encourage extension intocertain areas whereas others discourage extension into others. Wellcharacterized molecules that encourage neurite outgrowth in vitroinclude the extracellular matrix molecule laminin and the neuronal cellsurface molecule L1/G4/8D9. These molecules which promote neuriteextension are generally widely distributed throughout the body. Lamininimmunoreactivity is reasonably widespread in the developing central andperiphera] nervous systems. Similarly, L1/G4/8D9 is present on a widevariety of neuronal processes in the developing central nervous system,particularly long projecting axons. It is, therefore, unclear whetherthe known outgrowth promoting molecules play an important role inself-specific choices growth cones make as they decide between possibleroutes. Instead, their function is believed to provide a generallypermissive environment in which growth cones extend and respond to morespecific navigational cues.

[0208] Among these more specific cues are molecules that inhibit themotility of particular growth cones. Growth cones have been observed tolose their motile morphology and cease advancing (collapse) on contactwith other neurites of different types. Territory formation in vitro maymean the manifestation of a process that leads to selectivefasciculation in vivo. Some growth cones have been observed to crawlalong specific axonal pathways, or stereotype sequences of axonalpathways in developing embryos. Specific motility inhibiting effectscould determine which of several alternative pathways a growth cone willextend on. Growth cones would be expected to prefer growing on axonsthat do not induce them to collapse while shunning those that do.

[0209] It has been observed that, for example, sympathetic growth coneswill be inhibited or collapse when coming in contact with retinalneurites. Likewise, growth cones of retinal neurites will collapse whencoming in contact with sympathetic neurites. It is believed that suchcell activity is achieved through the presence of receptors whichspecifically respond to specific growth inhibition cues by the moleculeswhich transmit specific cues pertaining to growth. Cues are believed tobe present on cell surfaces, particularly on axon surfaces.

[0210] When nerve damage occurs, repair is impeded or incapable ofoccurring due to the failure of neurites to replace damaged axons ordendrites. If an existing neurite is damaged, severed or destroyed, anew neurite is incapable of growing out from the cell body to replaceit. The presence of molecules which inhibit neurite growth are believedto be responsible for the difficulty in neurite regeneration. Collapsinsare proteins that function to modulate the activity of molecules whichmodulate growth cone extension.

[0211] We herein describe the identification and characterization ofnovel polypeptides having homology to a collapsin protein, designatedherein as PRO1491 polypeptides.

[0212] 89. PRO1431

[0213] The transduction of intracellular signaling is crucial to cellprocessing such as differentiation, motility and division. Such signaltransduction is believed to occur throughout the cell in the form ofcomplex interactions between proteins. Such protein-protein interactionsare often mediated by modular domains within signaling proteins. As aresult, signal transduction is now modeled as a system in whichmolecules act in a combination, and the composition of that combination,determines the signal.

[0214] Src homology domains (e.g., SH2 and SH3) are two domains found inregions of sequence similarity of proteins involved in signaltransduction. Early work on the oncogenic tyrosine kinase Src identifiedthe SH2 domain. Since then, SH2 and SH3 domains have been found in manydiverse proteins, making them among the most common type of structuralmotif. SH2 and SH3 domains are modular in that they fold independentlyof the protein that contains them, their secondary structure places N-and C- termini close to one another in space, and they appear atvariable locations (anywhere from N- to C-terminal) from one protein otthe next (Cohen et al., Cell 80:237-348, 1995).

[0215] Early studies that mutated the SH2 or SH3 domain showed thatthese two domains were important for function, but it was not until thecloning of unrelated families of signaling proteins such as RAS-GAP, andthe Crk oncogene that the modular nature of these domains was revealed.These latter experiments demonstrated that RAS-GAP and Crk bound tightlyto receptor tyrosine kinases upon ligand stimulation. Follow-up studiesdemonstrated that the mechanism of this binding was through the SH2domain and that receptor autophosphorylation was required. Such afinding implied that activation of the receptor tyrosine kinase could beviewed as a means of changing the binding aspect of the intracellulardomain, and the receptor-SH2 containing protein interaction wouldinitiate the signal transduction cascade.

[0216] SH3 domains have a more general function than that which ispurported for SH2. SH3 binding proteins have been isolated by screeningbacteriophage expression libraries with labeled SH3 domains. The resultsof these experiments showed that SH3 domains would bind to shortproline-rich peptides, in particular the motif PxxP. Based on the levelof knowledge present at the time of the preparation of the presentpatent application, all of the SH3 binding sites identified have theproperty of being proline rich. Binding of an SH3 domain is independentof covalent modification of the binding site, such as phosphorylation asoccurs with the SH2 domain. As a result, SH3-ligand interactions areusually constitutive and not inducible, although exceptions do exist. Ingeneral, SH3 domains are less likely to act as signal “switches” than asa means of assembling protein complexes via moderate-affinityinteractions. Such moderate affinity interactions also imply that theSH3-mediated interactions will be relatively short in duration andremodeled in response to changes in concentration of binding partners.

[0217] The resolution of binding characteristics of SH2 and SH3 domainshas led to proposed compounds which would block signal transduction.Peptidomimetic ligands based on the sequence of target proteins for SH2and SH3 domains may represent new lead compounds for the therapy ofproliferative diseases that are dependent upon constitutively activatedtyrosine kinases (e.g., BCR/ABL in chronic myelogenous and acutelymphocytic leukemias or HER-2/Neu in breast and ovarian cancer).

[0218] 90. PRO1563

[0219] Cellular disintegrin and metalloproteinase (ADAMs) are a familyof genes with a sequence similar to those of snake venommetalloproteinases and disintegrins. The ADAMTS-1 gene encodes a newtype of ADAM protein with respect to possessing the thrombospondin (TSP)type I motifs, the expression of which is associated with theinflammatory process (Kuno et al., J. Biol. Chem. 273:13912-13917(1998), Kuno et al., Genomics 46:466-471 (1997) and Kuno et al., J.Biol. Chem. 272:556-562 (1997)). Expression of the ADAMTS-1 gene isinduced in kidney and heart by in vivo administration oflipopolysaccharide, suggesting a possible role in the inflammationreaction. In this regard, the ADAMTS-1 protein has been suggested asplaying a possible role in 35 various inflammatory processes as well asin the development of cancer cachexia (Kuno et al., 1998, supra). Weherein describe the identification and characterization of novelpolypeptides having homology to ADAMTS-1 protein, designated herein asPRO1563 polypeptides.

[0220] 91. PRO1565

[0221] Chondromodulin proteins are cartilage-generated matrix componentsthat synergistically stimulate the growth and differentiation ofchondrocytes (Suzuki, Connect. Tissue Res. 35:303-307 (1996)). Morespecifically, chondromodulin-I functions to inhibit the proliferation ofvascular endothelial cells and tube formation, thereby functioning tostimulate cartilage growth and inhibiting replacing cartilage by bone inan early stage. Chondromodulin-II, while not capable of inhibitingvascularization like chondromodulin-I, also functions to stimulateosteoclast differentiation and cartilage growth. As such, these twopolypeptides are essential for the regulation of the formation ofcartilage and endochondral bone structures. Given the extremelyimportant physiological roles played by the chondromodulin proteins,there is significant interest in identifying and characterizing novelpolypeptides having homology to these proteins. We herein describe theidentification and characterization of novel polypeptides havinghomology to chondromodulin-I protein, designated herein as PRO1565polypeptides.

[0222] 92. PRO1571

[0223] Clostridium perfringens enterotoxin (CPE) is considered to be thevirulence factor responsible for causing the symptoms of C. perfringenstype A food poisoning and may also be involved in other human andveterinary illnesses (McClane, Toxicon. 34:1335-1343 (1996)). CPEcarries out its adverse cellular functions by binding to anapproximately 50 kD cell surface receptor protein designated theClostridium perfringens enterotoxin receptor (CPE-R) to form anapproximately 90,000 kD complex on the surface of the cell. cDNAsencoding the CPE-R protein have been identified characterized in bothhuman and mouse (Katahira et al., J. Cell Biol. 136:1239-1247 (1997) andKatahira et al., J. Biol. Chem. 272:26652-26658 (1997)). Since the CPEtoxin has been reported to cause a variety of illnesses in mammalianhosts and those illnesses are initiated by binding of the CPE toxin tothe CPE-R, there is significant interest in identifying novel CPE-Rhomologs. We herein describe the identification and characterization ofnovel polypeptides having homology to the CPE-R, designated herein asPRO1679 polypeptides.

[0224] 25 93. PRO1572

[0225] Clostridium perfringens enterotoxin utilizes two structurallyrelated membrane proteins as functional receptors in vivo. Human andmouse cDNAs showing homology to the Clostridium enterotoxin receptor(CPE-R) gene have previously been cloned as described in Katahira, etal., J. Biol. Chem., 272(42):26652-8 (1997). They have been classifiedinto two groups, the Vero cell CPE receptor homologues and rat androgenwithdrawal apoptosis protein (RVP1). These receptors are thus ofinterest as are related molecules. Of particular interest is the use ofthese receptors and related molecules in the identification ofmodulators of these receptors.

[0226] Also of interest are members of the claudin family and moleculesrelated thereto. Claudins are integral membrane proteins localizing attight junctions with no sequence similarity to occludin. Furuse, et al.,J. Cell Biol., 141(7):1539-50 (1998).

[0227] 94. PRO1573

[0228] Clostridium perfringens enterotoxin utilizes two structurallyrelated membrane proteins as functional receptors in vivo. Human andmouse cDNAs showing homology to the Clostridium enterotoxin receptor(CPE-R) gene have previously been cloned as described in Katahira, etal., J. Biol. Chem., 272(42):26652-8 (1997). They have been classifiedinto two groups, the Vero cell CPE receptor homologues and rat androgenwithdrawal apoptosis protein (RVP1). These receptors are thus ofinterest as are related molecules. Of particular interest is the use ofthese receptors and related molecules in the identification ofmodulators of these receptors.

[0229] Also of interest is the ventral prostate.1 protein (RVP. 1) whichis transcriptionally induced in the regressing rat prostate aftercastration. This protein is further described in Peacock, et al.,Genomics, 46(3):443-9 (1997).

[0230] 95. PRO1488

[0231] Clostridium perfringens enterotoxin utilizes two structurallyrelated membrane proteins as functional receptors in vivo. Human andmouse cDNAs showing homology to the Clostridium enterotoxin receptor(CPE-R) gene have previously been cloned as described in Katahira, etal., J. Biol. Chem., 272(42):26652-8 (1997), and Katahira, et al., J.Cell Biol., 136(6):1239-1247 (1997). They have been classified into twogroups, the Vero cell CPE receptor homologues and rat androgenwithdrawal apoptosis protein (RVP1). These receptors are thus ofinterest as are related molecules. Of particular interest is the use ofthese receptors and related molecules in the identification ofmodulators of these receptors.

[0232] Efforts are being undertaken by both industry and academia toidentify new, native receptor proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel receptor proteins.

[0233] 96. PRO1489

[0234] Clostridium perfringens enterotoxin (CPE) is considered to be thevirulence factor responsible for causing the symptoms of C. perfringenstype A food poisoning and may also be involved in other human andveterinary illnesses (McClane, Toxicon. 34:1335-1343 (1996)). CPEcarries out its adverse cellular functions by binding to anapproximately 50 kD cell surface receptor protein designated theClostridium perfringens enterotoxin receptor (CPE-R) to form anapproximately 90,000 kD complex on the surface of the cell. cDNAsencoding the CPE-R protein have been identified characterized in bothhuman and mouse (Katahira et al., J. Cell Biol. 136:1239-1247 (1997) andKatahira et al., J. Biol. Chem. 272:26652-26658 (1997)). Since the CPEtoxin has been reported to cause a variety of illnesses in mammalianhosts and those illnesses are initiated by binding of the CPE toxin tothe CPE-R, there is significant interest in identifying novel CPE-Rhomologs. We herein describe the identification and characterization ofnovel polypeptides having homology to the CPE-R, designated herein asPRO1489 polypeptides.

[0235] 97. PRO1474

[0236] Avian egg whites are a rich source of protein inhibitors ofproteinases belonging to all four mechanistic classes. Ovomucoid andovoinhibitor are multidomain Kazal-type inhibitors with each domaincontaining an actual or putative reactive site for a serine proteinase.Cystatin is a cysteine proteinase inhibitor, while ovostatin inhibitsproteinases of all four mechanistic classes. For a review of theseinhibitors, see Saxena and Tayyab, Cell Mol. Life Sci., 53(1):13-23(1997). New members of protein inhibitors of proteinases are ofinterest, particularly those having sequence identity with knowninhibitors such as ovomucoid.

[0237] Serine protease inhibitors in general are of interest. Serineproteases such as neuropsin have been indicated as associated withextracellular matrix modifications and cell migrations. See, generally,Chen, et al., Neurosci., 7(2):5088-5097 (1995) and Chen, et al., J.Histochem. Cytochem., 46:313-320 (1998). Another serine protease, theenamel matrix serine proteinase, is associated with the degradation oforganic matrix in teeth. Simmer, et al., J. Dent. Res., 77(2):377-386(1998), Overall and Limeback, Biochem J., 256(3):965-972 (1988), andMoradian-Oldak, Connect. Tissue Res., 35(1-4):231-238 (1996). Thus,inhibitors of these proteases are of interest in the case that thesemechanisms require control.

[0238] 98. PRO1508

[0239] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1508.

[0240] 99. PRO1555

[0241] Efforts are being undertaken by both industry and academia toidentify new, native transmenibrane proteins. Many efforts are focusedon the screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1555.

[0242] 100. PRO1485

[0243] Lysozymes are secreted enzymes that preferentially hydrolyze the[beta]-1,4 glucosidic linkages between N-acetylmuramic acid andN-acetylgucosamine which occur in the mucopeptide cell wall structure ofcertain microoganisms. Lysozyme is of widespread distribution in animalsand plants. It has been found in mammalian secretions and tissuesincluding saliva, tears, milk, cervical mucus, leucocytes, kidneys, etc.The identification of new members of the lysozyme family of proteins isof interest because of the variety of roles lysozymes play in metabolicfunction and dysfunction. Abnormal levels of lysozymes have beenimplicated in various disease states. Lysozymes have been reported tohave anti-microbial, analgesic, and antinociceptive properties.Additional characteristics and possible uses of lysozymes are describedin U.S. Pat. No. 5,618,712.

[0244] Of particular interest is lysozyme C which has been recruited asa digestive enzyme in the stomachs of creatures needing to retrievenutrients from microorganisms in fermented food. The history of lysozymeC and related proteins are further described in Qasba and Kumar, Crit.Rev. Biochem. Mol. Biol., 32(4):255-306 (1997); Irwin, EXS, 75:347-361(1996)

[0245] 101. PRO1564

[0246] Glycosylation is a common and complex form of post-translationalprotein modification. Although a large and increasing number of uniquestructures is known to exist, most arise from a series of commonsynthetic intermediates and differ at their peripheryglycosyltransferases, which recognize both the oligosaccharide acceptorand features of the underlying protein.UDP-N-acetyl-alpha-D-galactosamine:polypeptideN-acetylgalactosaminyltransferase is an enzymatic protein that initiates0-glycosylation of specific serine and threonine amino acids in proteinsby adding N-acetylgalactosamine to the hydroxy group of these aminoacids. Since numerous important biological and physiological events areregulated by protein glycosylation, there is significant interest inidentifying and characterizing novel polypeptides having homology to theknown glycosylation proteins. We herein describe the identification andcharacterization of novel polypeptides having homology to anN-acetylgalactosaminyltransferase protein, designated herein as PRO1564polypeptides.

[0247] 102. PRO1755

[0248] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1755.

[0249] 103. PRO1757

[0250] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1757.

[0251] 104. PRO1758

[0252] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1758.

[0253] 105. PRO1575

[0254] Protein Disulfide Isomerase (PDI) enhances formation of disulfidebonds in human serum albumin (HSA). Consequently, PDI assists in theformation of the overall structure of human serum albumin. Co-expressionof PDI with human serum albumin increases secretion of HSA by reducingthe chance of HSA structural instability and destruction by cellularproteases. Co-expression of PDI and HSA improved localization in theendoplasmic reticulum of eukaryotic cells. (Hayano et al., EP-50941-A(1992)). PDI and the beta-subunit of human prolyl 4-hydroxylase havebeen shown to be products of the same gene. (Pihlajaniemi et al., EMBOJ., 6:64349 (1987)). In addition, copies of the CGHC-containing activesite sequences of PDI have been found in an abundant luminal endoplasmicreticulum protein, Erp72. (Mazzarella et al., J. Biol. Chem.,2:1094-1101 (1990)).

[0255] Efforts are being undertaken by both industry and academia toidentify new, native receptor proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel receptor proteins.

[0256] 106. PRO1787

[0257] Multiple de novo MPZ (P0) point mutations have been identified ina sporadic Dejerine-Sottas (DDS) case. Warner, et al., Hum. Mutat.,10(1):214 (1997). DDS is a severe demyelinating peripheral neuropathywith onset in infancy, and has been associated with mutations in eitherPMP22 or MPZ. Moreover, mutational analysis of the MPZ, PMP22 and Cx32genes in patients of Spanish ancestry with Charcot-Marie-Tooth diseaseand hereditary neuropathy with liability to pressure palsies have beenreported on. Bort, et al., Hum. Genet., 99(6):746-54 (1997). Myelinglycoprotein P0 has been reported on in a number of other studies aswell (Blanquet-Grossard, et al., Clin. Genet., 48(6):281-3 (1995),Hayasaka, et al., Nat. Genet., 5(1):314 (1993) and Saavedra, et al., J.Mol. Evol., 29(2):149-56 (1989). Thus, proteins which may belong to themyelin p0 family are of interest.

[0258] 107. PRO1781

[0259] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1781.

[0260] 108. PRO1556

[0261] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1556.

[0262] 109. PRO1759

[0263] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1759.

[0264] 110. PRO1760

[0265] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1760.

[0266] 111. PRO1561

[0267] Phospholipase A2 (PLA2) is a protein which hydrolyzes a 2-acylester bond of phospholipids, and examples thereof include cytosolic PLA2and secretory PLA2 which can be clearly distinguished from each other.It has been known that the cytosolic PLA2 (cPLA2) selectively hydrolyzesphospholipids containing arachidonic acid of which 2-position isesterified. Given these important biological activities, there issignificant interest in identifying and characterizing novel plypeptideshaving homology to phospholipase A2 proteins. We herein describe theidentification and characterization of novel polypeptides havinghomology to human phospholipase A2 protein, designated herein as PRO1561polypeptides.

[0268] 112. PRO1567

[0269] Colon specific genes (CSGs)and their expression products aredescribed in published international application WO9639419. They areuseful diagnostic markers for colon cancer and for colon cancermetastasis and can also be used to screen for potential pharmaceuticaland diagnostic agents. The identification of new members of the CSGfamily is of interest.

[0270] 113. PRO1693

[0271] Insulin-like growth factors have both growth-promoting andinsulin-like activities. There are two well characterized plasmaIGF-binding proteins in human. The larger protein is an acid-labileprotein of 53K which circulates mostly as a 125 to 150 kD complexthought to be composed of IGF-I or IGF-II, the binding protein itselfand an acid-labile non-IGF-binding protein with an approximate molecularmass of 100K kD. The smaller protein has an apparent molecular mass of28K in the non-reduced form and 34K when reduced. These IGF-bindingproteins have been shown to play important roles in the physiologicalactivities played by the insulin-like growth factor proteins. As such,there is substantial interest in identifying and characterizing novelpolypeptides having homology to the insulin-like growth factor bindingproteins. We herein describe the identification and characterization ofnovel polypeptides having homology to an insulin-like growth factorbinding protein, designated herein as PRO1693 polypeptides.

[0272] 114. PRO1784

[0273] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO1784.

[0274] 115. PRO1605

[0275] N-acetylglucosaminyltransferase proteins comprise a family ofenzymes that provide for a variety of important biological functions inthe mammalian organism. As an example,UDP-N-acetylglucosamine:alpha-3-D-mannosidebeat-1,2-N-acetylglucosaminyltransferase I is an enzymatic protein thatcatalyzes an essential first step in the conversion of high-mannoseN-glycans to hybrid and complex N-glycans (Sarkar et al., Proc. Natl.Acad. Sci. USA. 88:234-238 (1991). Given the obvious importance of theN-acetylglucosaminyltransferase enzymes, there is significant interestin the identification and characterization of novel polypeptides havinghomology to an N-acetylglucosaminyltransferase protein. We hereindescribe the identification and characterization of novel polypeptideshaving homology to an N-acetylglucosaminyltransferase protein,designated herein as PRO1605 polypeptides.

[0276] 116. PRO1788

[0277] Protein-protein interactions include receptor and antigencomplexes and signaling mechanisms. As more is known about thestructural and functional mechanisms underlying protein-proteininteractions, protein-protein interactions can be more easilymanipulated to regulate the particular result of the protein-proteininteraction. Thus, the underlying mechanisms of protein-proteininteractions are of interest to the scientific and medical community.

[0278] Proteins containing leucine-rich repeats are thought to beinvolved in protein-protein interactions. Leucine-rich repeats are shortsequence motifs present in a number of proteins with diverse functionsand cellular locations. The crystal structure of ribonuclease inhibitorprotein has revealed that leucine-rich repeats correspond to beta-alphastructural units. These units are arranged so that they form a parallelbeta-sheet with one surface exposed to solvent, so that the proteinacquires an unusual, nonglobular shape. These two features have beenindicated as responsible for the protein-binding functions of proteinscontaining leucine-rich repeats. See, Kobe and Deisenhofer, TrendsBiochem. Sci., 19(10):415-421 (Oct. 1994).

[0279] A study has been reported on leucine-rich proteoglycans whichserve as tissue organizers, orienting and ordering collagen fibrilsduring ontogeny and are involved in pathological processes such as woundhealing, tissue repair, and tumor stroma formation. Iozzo, R. V., Crit.Rev. Biochem. Mol. Biol., 32(2):141-174 (1997). Others studiesimplicating leucine rich proteins in wound healing and tissue repairhave been reported including De La Salle, C., et al., Vouv. Rev. Fr.Hematol. (Germany), 37(4):215-222 (1995), reporting mutations in theleucine rich motif in a complex associated with the bleeding disorderBernard-Soulier syndrome; Chlemetson, K. J., Thromb. Haemost. (Germany),74(1):111-116 (July 1995), reporting that platelets have leucine richrepeats and Ruoslahti, E. I., et al.; and WO9110727-A by La Jolla CancerResearch Foundation, reporting that decor in binding to transforminggrowth factor-α has involvement in a treatment for cancer, wound healingand scarring. Related by function to this group of proteins is theinsulin like growth factor (IGF), in that it is useful in wound-healingand associated therapies concerned with re-growth of tissue, such asconnective tissue, skin and bone; in promoting body growth in humans andanimals; and in stimulating other growth-related processes. The acidlabile subunit of IGF (ALS) is also of interest in that it increases thehalf-life of IGF and is part of the IGF complex in vivo. Ollendorff, V.,et al., Cell Growth Differ, 5(2):213-219 (Feb. 1994) identified the GARPgene which encodes a leucine-rich repeat-containing protein that hasstructural similarities with human GP Ib alpha and GP V plateletproteins, and with the Chaoptin, Toll, and Connectin adhesion moleculesof Drosophila.

[0280] Another protein which has been reported to have leucine-richrepeats is the SLIT protein which has been reported to be useful intreating neurodegenerative diseases such as Alzheimer's disease, nervedamage such as in Parkinson's disease, and for diagnosis of cancer, see,Artavanistsakonas, S. and Rothberg, J. M., WO9210518-A1 by YaleUniversity. Of particular interest is LIG-1, a membrane glycoproteinthat is expressed specifically in glial cells in the mouse brain, andhas leucine rich repeats and immunoglobulin-like domains. Suzuki, etal., J. Biol. Chem. (U.S.), 271(37):22522 (1996). Other studiesreporting on the biological functions of proteins having leucine richrepeats include:Tayar, N., et al., Mol. Cell Endocrinol., (Ireland),125(1-2):65-70 (Dec. 1996) (gonadotropin receptor involvement); Miura,Y., et al., Nippon Rinsho (Japan), 54(7):1784-1789 (July 1996)(apoptosis involvement); Harris, P. C., et al., J. Am. Soc. Nenhrol.,6(4):1125-1133 (Oct. 1995) (kidney disease involvement); and Aineida,A., et al., Oncogene 16(23):2997-3002 (Jun. 1998) (malignant gliomainvolvement).

[0281] 117. PRO1801

[0282] Interleukin-10 (IL-10) is a pleiotropic immunosuppressivecytokine that has been implicated as an important regulator of thefunctions of myeloid and lymphoid cells. It has been demonstrated thatIL-10 functions as a potent inhibitor of the activation of the synthesisof various inflammatory cytokines including, for example, IL-1, IL6,IFN-γ and TNF-α (Gesser et al., Proc. Natl. Acad. Sci. USA94:14620-14625 (1997)).

[0283] Moreover, IL-10 has been demonstrated to strongly inhibit severalof the accessory activities of macrophages, thereby functioning as apotent suppressor of the effector functions of macrophages, T-cells andNK cells (Kuhn et al., Cell 75:263-274 (1993)). Furthermore, IL-10 hasbeen strongly implicated in the regulation of B-cell, mast cell andthymocyte differentiation.

[0284] IL-10 was independently identified in two separate lines ofexperiments. First, cDNA clones encoding murine IL-10 were identifiedbased upon the expression of cytokine synthesis inhibitory factor (Mooreet al., Science 248:1230-1234 (1990)), wherein the human IL-10counterpart cDNAs were subsequently identified by cross-hybridizationwith the murine IL-10 cDNA (Viera et al., Proc. Natl. Acad. Sci. USA88:1172-1176 (1991)). Additionally, IL-10 was independently identifiedas a B-cell-derived mediator which functioned to co-stimulate activethymocytes (Suda et al., Cell Immunol. 129:228 (1990)).

[0285] Recently, a novel cytokine polypeptide which is member of theIL-10-related cytokine family has been identified and characterized.This novel secreted cytokine, designated IL-19, is a 177 amino acidpolypeptide having a molecular weight of approximately 20.4 kD (see WO98/08870, published Mar, 5, 1998). It has been reported that IL-19 isspecifically expressed by activated monocytes, wherein increased and/ordecreased levels of IL-19 may be associated with one or morephysiological disorders that are associated with increased or decreasedlevels of cytokine production (see WO 98/08870). Specifically, IL-19 issuggested as being capable of inhibiting the synthesis of inflammatorycytokines by cells of the immune system.

[0286] Given the obvious importance of the various cytokine polypeptidesand, more specifically, immunosuppressive cytokines such as IL-10 andpotentially IL-19, there is significant interest in the identificationand characterization of novel cytokine polypeptides having homology toIL-10 and/or IL-19. We herein describe the identification andcharacterization of novel polypeptides having homology to IL-19,designated herein as PRO1801 polypeptides.

[0287] 118. UCP4

[0288] Uncoupling proteins or “UCPs”, believed to play a role in themetabolic process, have been reported in the literature. UCPs were firstfound and described in the brown fat cells of hibernating animals, suchas bears. UCPs were believed to help such hibernators and othercold-weather adapted animals maintain core body temperatures in coldweather by raising their body's resting metabolic rate. Because humanspossess relatively small quantities of brown adipose tissue, UCPs wereoriginally thought to play a minor role in human metabolism.

[0289] Several different human uncoupling proteins have now beendescribed. [See, generally, Gura, Science, 280:1369-1370 (1998)]. Thehuman uncoupling protein referred to as UCP1 was identified by Nichollset al. Nicholls et al. showed that the inner membrane of brown fat cellmitochondria was very permeable to proteins, and the investigatorstraced the observed permeability to a protein, called UCP1, in themitochondrial membrane. Nicholls et al. reported that the UCP1, bycreating such permeability, reduced the number of ATPs that can be madefrom a food source, thus raising body metabolic rate and generatingheat. [Nicholls et al., Physiol. Rev., 64, 1-64 (1984)].

[0290] It was later found that UCP1 is indeed expressed only in brownadipose tissue [Bouillaud et al., Proc. Natl. Acad. Sci., 82:445-448(1985); Jacobsson et al., J. Biol. Chem., 260:16250-16254 (1985)].Genetic mapping studies have shown that the human UCP1 gene is locatedon chromosome 4. [Cassard et al., J. Cell.

[0291] Biochem., 43:255-264 (1990)].

[0292] Another human UCP, referred to as UCPH or UCP2, has also beendescribed. [Gimeno et al., Diabetes, 46:900-906 (1997); Fleury et al.,Nat. Genet., 15:269-272 (1997); Boss et al., FEBS Letters, 408:3942(1997);

[0293] see also, Wolf, Nutr. Rev. , 55:178-179 (1997)]. Fleury et al.teach that the UCP2 protein has 59% amino acid identity to UCP1, andthat UCP2 maps to regions of human chromosome 11 which have been linkedto hyperinsulinaemia and obesity. [Fleury et al., supra]. It has alsobeen reported that UCP2 is expressed in a variety of adult tissues, suchas brain and muscle and fat cells. [Gimeno et al., supra, and Fleury etal., supra].

[0294] A third human UCP, UCP3, was recently described in Boss et al.,supra; Vidal-Puig et al., Biochem. Biophys. Res. Comm., 235:79-82(1997); Solanes et al., J. Biol. Chem., 272:25433-25436 (1997); and Gonget al., J. Biol. Chem., 272:24129-24132 (1997). [See also Great BritainPatent No. 9716886]. Solanes et al. report that unlike UCP1 and UCP2,UCP3 is expressed preferentially in human skeletal muscle, and that theUCP3 gene maps to human chromosome 1 1, adjacent to the UCP2 gene.[Solanes et al., supra]. Gong et al. describe that the UCP3 expressioncan be regulated by known thermogenic stimuli, such as thyroid hormone,beta3-andrenergic agonists and leptin. [Gong et al., supra].

[0295] 119. PRO193

[0296] Efforts are being undertaken by both industry and academia toidentify new, native transmembrane proteins. Many efforts are focused onthe screening of mammalian recombinant DNA libraries to identify thecoding sequences for novel transmembrane proteins. We herein describethe identification and characterization of a novel transmembrane proteindesignated herein as PRO193.

[0297] 120. PRO1130

[0298] Polypeptides such as the human 2-19 protein may function ascytokines. Cytokines are low molecular weight proteins which function tostimulate or inhibit the differentiation, proliferation or function ofimmune cells. Cytokine proteins often act as intercellular messengersand have multiple physiological effects. Given the physiologicalimportance of immune mechanisms in vivo, efforts are currently beingundertaken to identify new, native proteins which are involved ineffecting the immune system. We describe herein the identification of anovel polypeptide which has sequence similarity to the human 2-19protein.

[0299] 121. PRO1335

[0300] Carbonic anhydrase is an enzymatic protein that which aids carbondioxide transport and release in the mammalian blood system bycatalyzing the synthesis (and the dehydration) of carbonic acid from(and to) carbon dioxide and water. Thus, the actions of carbonicanhydrase are essential for a variety of important physiologicalreactions in the mammal. As such, there is significant interest in theidentification and characterization of novel polypeptides havinghomology to carbonic anhydrase. We herein describe the identificationand characterization of novel polypeptides having homology to carbonicanhydrase, designated herein as PRO1335 polypeptides.

[0301] 122. PRO1329

[0302] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1329.

[0303] 123. PRO1550

[0304] Efforts are being undertaken by both industry and academia toidentify new, native secreted proteins. Many efforts are focused on thescreening of mammalian recombinant DNA libraries to identify the codingsequences for novel secreted proteins. We herein describe theidentification and characterization of a novel secreted proteindesignated herein as PRO1550.

SUMMARY OF THE INVENTION

[0305] 1. PRO1560

[0306] A cDNA clone (DNA19902-1669) has been identified that encodes anovel polypeptide believed to be a novel member of the tetraspan family,designated in the present application as “PRO1560.”

[0307] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1560 polypeptide.

[0308] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1560 polypeptide having the sequence of aminoacid residues from 1 or about 43 to about 245, inclusive of FIG. 2 (SEQID NO:4), or (b) the complement of the DNA molecule of (a).

[0309] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1560 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 167 andabout 775, inclusive, of FIG. 1 (SEQ ID NO:3). Preferably, hybridizationoccurs under stringent hybridization and wash conditions.

[0310] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203454 (DNA19902-1669), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203454 (DNA19902-1669).

[0311] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 or about 43 to about 245, inclusive ofFIG. 2 (SEQ ID NO:4), or the complement of the DNA of (a).

[0312] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1560 polypeptide having the sequence of amino acid residues fromabout 1 or about 43 to about 245, inclusive of FIG. 2 (SEQ ID NO:4), or(b) the complement of the DNA molecule of (a), and, if the DNA moleculehas at least about an 80% sequence identity, preferably at least aboutan 85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0313] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1560 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 42 in thesequence of FIG. 2 (SEQ ID NO:4). The transmembrane domains have beententatively identified as at about amino acid positions 1942, 61-83,92-114 and 209-230 in the PRO1560 amino acid sequence (FIG. 2, SEQ IDNO:4).

[0314] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 43 to about 245, inclusive of FIG. 2 (SEQ ID NO:4), or (b) thecomplement of the DNA of (a).

[0315] Another embodiment is directed to fragments of a PRO1560polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0316] In another embodiment, the invention provides isolated PRO1560polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0317] In a specific aspect, the invention provides isolated nativesequence PRO1560 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 or about 43 through 245 of FIG. 2(SEQ ID NO:4).

[0318] In another aspect, the invention concerns an isolated PRO1560polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 43 to about 245, inclusive of FIG. 2 (SEQ ID NO:4).

[0319] In a further aspect, the invention concerns an isolated PRO1560polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 43 through 245 of FIG. 2 (SEQ ID NO:4).

[0320] In yet another aspect, the invention concerns an isolated PRO1560polypeptide, comprising the sequence of amino acid residues 1 or about43 to about 245, inclusive of FIG. 2 (SEQ ID NO:4), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1560antibody. Preferably, the PRO1560 fragment retains a qualitativebiological activity of a native PRO1560 polypeptide.

[0321] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1560 polypeptide havingthe sequence of amino acid residues from about 1 or about 43 to about245, inclusive of FIG. 2 (SEQ ID NO:4), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0322] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1560 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1560 antibody.

[0323] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1560 polypeptide, bycontacting the native PRO1560 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0324] In a still further embodiment, the invention concerns acomposition comprising a PRO1560 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0325] 2. PRO444

[0326] A cDNA clone (DNA26846-1393) has been identified that encodes anovel secreted polypeptide, designated in the present application as“PRO444.”

[0327] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO444 polypeptide.

[0328] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO444 polypeptide having the sequence of amino acidresidues from about 1 or about 17 to about 117, inclusive of FIG. 4 (SEQID NO:6), or (b) the complement of the DNA molecule of (a).

[0329] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO444 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 656 andabout 958, inclusive, of FIG. 3 (SEQ ID NO:5). Preferably, hybridizationoccurs under stringent hybridization and wash conditions.

[0330] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203406 (DNA26846-1397), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203406 (DNA26846-1397).

[0331] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 or about 17 to about 117, inclusive ofFIG. 4 (SEQ ID NO:6), or the complement of the DNA of (a).

[0332] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 10 nucleotides, more preferably atleast about 20 nucleotides, and most preferably at least about 40nucleotides and produced by hybridizing a test DNA molecule understringent conditions with (a) a DNA molecule encoding a PRO444polypeptide having the sequence of amino acid residues from about 1 orabout 17 to about 117, inclusive of FIG. 4 (SEQ ID NO:6), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0333] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO444 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 16 in the sequence of FIG.4 (SEQ ID NO:6).

[0334] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 17 to about 117, inclusive of FIG. 4 (SEQ ID NO:6), or (b) thecomplement of the DNA of (a).

[0335] Another embodiment is directed to fragments of a PRO444polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0336] In another embodiment, the invention provides isolated PRO444polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0337] In a specific aspect, the invention provides isolated nativesequence PRO444 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 or about 17 to 117 of FIG. 4 (SEQ IDNO:6).

[0338] In another aspect, the invention concerns an isolated PRO444polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 17 to about 117, inclusive of FIG. 4 (SEQ ID NO:6).

[0339] In a further aspect, the invention concerns an isolated PRO444polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 17 to 117 of FIG. 4 (SEQ ID NO:6).

[0340] In yet another aspect, the invention concerns an isolated PRO444polypeptide, comprising the sequence of amino acid residues 1 or about17 to about 117, inclusive of FIG. 4 (SEQ ID NO:6), or a fragmentthereof sufficient to provide a binding site for an anti-PRO444antibody. Preferably, the PRO444 fragment retains a qualitativebiological activity of a native PRO444 polypeptide.

[0341] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO444 polypeptide havingthe sequence of amino acid residues from about 1 or about 17 to about117, inclusive of FIG. 4 (SEQ ID NO:6), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0342] 3. PRO1018

[0343] A cDNA clone (DNA56107-1415) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1018”.

[0344] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1018 polypeptide.

[0345] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO101 8 polypeptide having the sequence of aminoacid residues from about 1 or about 25 to about 189, inclusive of FIG. 6(SEQ ID NO:8), or (b) the complement of the DNA molecule of (a).

[0346] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1018 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 129 orabout 201 and about 695, inclusive, of FIG. 5 (SEQ ID NO:7). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0347] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203405 (DNA56107-1415) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203405 (DNA56107-1415).

[0348] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 25 to about 189, inclusive of FIG. 62(SEQ ID NO:8), or (b) the complement of the DNA of (a).

[0349] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1018 polypeptide having the sequence of amino acidresidues from 1 or about 25 to about 189, inclusive of FIG. 6 (SEQ IDNO:8), or (b) the complement of the DNA molecule of (a), and, if the DNAmolecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0350] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1018 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 24 in thesequence of FIG. 6 (SEQ ID NO:8). The transmembrane domains have beententatively identified as extending from about amino acid position 86 toabout amino acid position 103 and from about amino acid position 60 toabout amino acid position 75 in the PRO1018 amino acid sequence (FIG. 6,SEQ ID NO:8).

[0351] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 25 to about 189, inclusive of FIG. 6 (SEQ ID NO:8), or (b) thecomplement of the DNA of (a).

[0352] Another embodiment is directed to fragments of a PRO1018polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 5 (SEQ ID NO:7).

[0353] In another embodiment, the invention provides isolated PRO1018polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0354] In a specific aspect, the invention provides isolated nativesequence PRO1018 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 25 to about 189 ofFIG. 6 (SEQ ID NO:8).

[0355] In another aspect, the invention concerns an isolated PRO1018polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 25 to about 189, inclusive of FIG. 6 (SEQ ID NO:8).

[0356] In a further aspect, the invention concerns an isolated PRO1018polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 25 to about 189; inclusive of FIG. 6 (SEQ ID NO:8).

[0357] In yet another aspect, the invention concerns an isolated PRO1018polypeptide, comprising the sequence of amino acid residues 1 or about25 to about 189, inclusive of FIG. 6 (SEQ ID NO:8), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1018antibody. Preferably, the PRO1018 fragment retains a qualitativebiological activity of a native PRO1018 polypeptide.

[0358] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1018 polypeptide havingthe sequence of amino acid residues from about 1 or about 25 to about189, inclusive of FIG. 6 (SEQ ID NO:8), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0359] 4. PRO1773

[0360] A cDNA clone (DNA56406-1704) has been identified, having homologyto nucleic acid encoding a retinol dehydrogenase protein that encodes anovel polypeptide, designated in the present application as “PRO1773”.

[0361] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1773 polypeptide.

[0362] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1773 polypeptide having the sequence of aminoacid residues from about 1 or about 18 to about 319, inclusive of FIG. 8(SEQ ID NO:10), or (b) the complement of the DNA molecule of (a).

[0363] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1773 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 111 orabout 162 and about 1067, inclusive, of FIG. 7 (SEQ ID NO:9).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0364] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203478 (DNA56406-1704) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203478 (DNA56406-1704).

[0365] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 18 to about 319, inclusive of FIG. 8 (SEQID NO:10), or (b) the complement of the DNA of (a).

[0366] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 525 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1773 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 319, inclusive of FIG. 8 (SEQID NO:10), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0367] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1773 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 17 in thesequence of FIG. 8 (SEQ ID NO:10). The transmembrane domain has beententatively identified as extending from about amino acid position 136to about amino acid position 152 in the PRO1773 amino acid sequence(FIG. 8, SEQ ID NO:10).

[0368] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 18 to about 319, inclusive of FIG. 8 (SEQ ID NO:10), or (b) thecomplement of the DNA of (a).

[0369] Another embodiment is directed to fragments of a PRO1773polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 7 (SEQ ID NO:9).

[0370] In another embodiment, the invention provides isolated PRO1773polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0371] In a specific aspect, the invention provides isolated nativesequence PRO1773 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 18 to about 319 ofFIG. 8 (SEQ ID NO:10).

[0372] In another aspect, the invention concerns an isolated PRO1773polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 18 to about 319, inclusive of FIG. 8 (SEQ ID NO:10).

[0373] In a further aspect, the invention concerns an isolated PRO1773polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 18 to about 319, inclusive of FIG. 8 (SEQ ID NO:10).

[0374] In yet another aspect, the invention concerns an isolated PRO1773polypeptide, comprising the sequence of amino acid residues 1 or about18 to about 319, inclusive of FIG. 8 (SEQ ID NO:10), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1773antibody. Preferably, the PRO1773 fragment retains a qualitativebiological activity of a native PRO1773 polypeptide.

[0375] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1773 polypeptide havingthe sequence of amino acid residues from about 1 or about 18 to about319, inclusive of FIG. 8 (SEQ ID NO:10), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0376] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1773 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO 1773 antibody.

[0377] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1773 polypeptide bycontacting the native PRO1773 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0378] In a still further embodiment, the invention concerns acomposition comprising a PRO1773 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0379] 5. PRO1477

[0380] A cDNA clone (DNA56529-1647) has been identified, having homologyto nucleic acid encoding a mannosidase protein that encodes a novelpolypeptide, designated in the present application as “PRO1477”.

[0381] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1477 polypeptide.

[0382] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1477 polypeptide having the sequence of aminoacid residues from about 1 to about 699, inclusive of FIG. 10 (SEQ IDNO:12), or (b) the complement of the DNA molecule of (a).

[0383] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1477 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 23 andabout 2119, inclusive, of FIG. 9 (SEQ ID NO:11). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0384] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203293 (DNA56529-1647) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203293 (DNA56529-1647).

[0385] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 699, inclusive of FIG. 10 (SEQ ID NO:12),or (b) the complement of the DNA of (a).

[0386] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 540 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1477 polypeptide having the sequence of aminoacid residues from 1 to about 699, inclusive of FIG. 10 (SEQ ID NO:12),or (b) the complement of the DNA molecule of (a), and, if the DNAmolecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0387] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1477 polypeptide, with orwithout and/or the initiating methionine, and its soluble, i.e.,transmembrane domain deleted or inactivated variants, or iscomplementary to such encoding nucleic acid molecule. The transmembranedomains have been tentatively identified as extending from about aminoacid position 21 to about amino acid position 40 and from about aminoacid position 84 to about amino acid position 105 in the PRO1477 aminoacid sequence (FIG. 10, SEQ ID NO:12).

[0388] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 699, inclusive of FIG. 10 (SEQ ID NO:12), or (b) the complementof the DNA of (a).

[0389] Another embodiment is directed to fragments of a PRO1477polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 9 (SEQ ID NO:11).

[0390] In another embodiment, the invention provides isolated PRO1477polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0391] In a specific aspect, the invention provides isolated nativesequence PRO1477 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 699 of FIG. 10 (SEQID NO:12).

[0392] In another aspect, the invention concerns an isolated PRO1477polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 699, inclusive of FIG. 10 (SEQ ID NO:12).

[0393] In a further aspect, the invention concerns an isolated PRO1477polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 toabout 699, inclusive of FIG. 10 (SEQ ID NO:12).

[0394] In yet another aspect, the invention concerns an isolated PRO1477polypeptide, comprising the sequence of amino acid residues 1 to about699, inclusive of FIG. 10 (SEQ ID NO:12), or a fragment thereofsufficient to provide a binding site for an anti-PRO1477 antibody.Preferably, the PRO1477 fragment retains a qualitative biologicalactivity of a native PRO1477 polypeptide.

[0395] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1477 polypeptide havingthe sequence of amino acid residues from about 1 to about 699, inclusiveof FIG. 10 (SEQ ID NO:12), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0396] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1477 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1477 antibody.

[0397] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1477 polypeptide bycontacting the native PRO1477 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0398] In a still further embodiment, the invention concerns acomposition comprising a PRO1477 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0399] 6. PRO1478

[0400] A cDNA clone (DNA56531-1648) has been identified that encodes anovel polypeptide having sequence identity with galactosyltransferaseand designated in the present application as “PRO1478. ”

[0401] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1478 polypeptide.

[0402] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1478 polypeptide having the sequence of aminoacid residues from about 1 to about 327, inclusive of FIG. 12 (SEQ IDNO:17), or (b) the complement of the DNA molecule of (a).

[0403] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1478 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 77 andabout 1057, inclusive, of FIG. 11 (SEQ ID NO:16). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0404] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203286 (DNA56531-1648), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203286 (DNA56531-1648).

[0405] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 327, inclusive of FIG. 12 (SEQID NO:17), or the complement of the DNA of (a).

[0406] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1478 polypeptide having the sequence of amino acid residues fromabout 1 to about 327, inclusive of FIG. 12 (SEQ ID NO:17), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0407] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1478 polypeptide in itssoluble form, i.e. transmembrane domain deleted or inactivated variants,or is complementary to such encoding nucleic acid molecule. Thetransmembrane domain (type II) has been tentatively identified asextending from about amino acid position 29 through about amino acidposition 49 in the PRO1478 amino acid sequence (FIG. 12, SEQ ID NO:17).Therefore, a peptide including amino acids 50-327, with or without aminoacids 1-28, is specifically embodied herein, as well as the nucleic acidencoding such a peptide.

[0408] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 327, inclusive of FIG. 12 (SEQ ID NO:17), or (b) the complementof the DNA of (a).

[0409] Another embodiment is directed to fragments of a PRO1478polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0410] In another embodiment, the invention provides isolated PRO1478polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0411] In a specific aspect, the invention provides isolated nativesequence PRO1478 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 through 327 of FIG. 12 (SEQ IDNO:17).

[0412] In another aspect, the invention concerns an isolated PRO1478polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 327, inclusive of FIG. 12 (SEQ ID NO:17).

[0413] In a further aspect, the invention concerns an isolated PRO1478polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1through 327 of FIG. 12 (SEQ ID NO:17).

[0414] In yet another aspect, the invention concerns an isolated PRO1478polypeptide, comprising the sequence of amino acid residues 1 to about327, inclusive of FIG. 12 (SEQ ID NO:17), or a fragment thereofsufficient to provide a binding site for an anti-PRO1478 antibody.Preferably, the PRO1478 fragment retains a qualitative biologicalactivity of a native PRO1478 polypeptide.

[0415] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1478 polypeptide havingthe sequence of amino acid residues from about 1 to about 327, inclusiveof FIG. 12 (SEQ ID NO:17), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0416] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1478 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1478 antibody.

[0417] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1478 polypeptide, bycontacting the native PRO1478 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0418] In a still further embodiment, the invention concerns acomposition comprising a PRO1478 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0419] 7. PRO831

[0420] A cDNA clone (DNA56862-1343) has been identified that encodes anovel secreted polypeptide, designated in the present application as“PRO831”.

[0421] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO831 polypeptide.

[0422] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO831 polypeptide having the sequence of amino acidresidues from about 1 or about 16 to about 73, inclusive of FIG. 14 (SEQID NO:22), or (b) the complement of the DNA molecule of (a).

[0423] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO831 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 40 orabout 85 and about 258, inclusive, of FIG. 13 (SEQ ID NO:21).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0424] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203174 (DNA56862-1343) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203174 (DNA56862-1343).

[0425] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 16 to about 73, inclusive of FIG. 14 (SEQID NO:22), or (b) the complement of the DNA of (a).

[0426] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 470 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO831 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 73, inclusive of FIG. 14 (SEQID NO:22), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0427] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO831 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 15 in the sequence of FIG.14 (SEQ ID NO:22).

[0428] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 16 to about 73, inclusive of FIG. 14 (SEQ ID NO:22), or (b) thecomplement of the DNA of (a).

[0429] Another embodiment is directed to fragments of a PRO831polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 13 (SEQ ID NO:21).

[0430] In another embodiment, the invention provides isolated PRO831polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0431] In a specific aspect, the invention provides isolated nativesequence PRO831 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 16 to about 73 ofFIG. 14 (SEQ ID NO:22).

[0432] In another aspect, the invention concerns an isolated PRO831polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 16 to about 73, inclusive of FIG. 14 (SEQ ID NO:22).

[0433] In a further aspect, the invention concerns an isolated PRO831polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 16 to about 73, inclusive of FIG. 14 (SEQ ID NO:22).

[0434] In yet another aspect, the invention concerns an isolated PRO831polypeptide, comprising the sequence of amino acid residues 1 or about16 to about 73, inclusive of FIG. 14 (SEQ ID NO:22), or a fragmentthereof sufficient to provide a binding site for an anti-PRO831antibody. Preferably, the PRO831 fragment retains a qualitativebiological activity of a native PRO831 polypeptide.

[0435] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO831 polypeptide havingthe sequence of amino acid residues from about 1 or about 16 to about73, inclusive of FIG. 14 (SEQ ID NO:22), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0436] 8. PRO1113

[0437] A cDNA clone (DNA57254-1477) has been identified that encodes anovel polypeptide having sequence identity with leucine rich repeatproteins and designated in the present application as “PRO1113. ”

[0438] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1113 polypeptide.

[0439] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1 113 polypeptide having the sequence of aminoacid residues from about 1 to about 616, inclusive of FIG. 16 (SEQ IDNO:24), or (b) the complement of the DNA molecule of (a).

[0440] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1113 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 214 andabout 2061, inclusive, of FIG. 15 (SEQ ID NO:23). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0441] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203289 (DNA57254-1477), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203289 (DNA57254-1477).

[0442] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 616, inclusive of FIG. 16 (SEQID NO:24), or the complement of the DNA of (a).

[0443] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1 13 polypeptide having the sequence of amino acid residues fromabout 1 to about 616, inclusive of FIG. 16 (SEQ ID NO:24), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0444] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1113 polypeptide in itssoluble, i.e. transmembrane domain deleted or inactivated variants, oris complementary to such encoding nucleic acid molecule. Thetransmembrane domain has been tentatively identified as extending fromabout amino acid position 13 through about amino acid position 40 in thePRO1 13 amino acid sequence (FIG. 16, SEQ ID NO:24). Thus, alsopresented herein is a peptide comprising amino acids 41-616, andoptionally 1-12 of SEQ ID NO:24, and the nucleic acids encoding thesame.

[0445] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 616, inclusive of FIG. 16 (SEQ ID NO:24), or (b) the complementof the DNA of (a).

[0446] Another embodiment is directed to fragments of a PRO1 113polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0447] In another embodiment, the invention provides isolated PRO1113polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0448] In a specific aspect, the invention provides isolated nativesequence PRO1113 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 through 616 of FIG. 16 (SEQ IDNO:24).

[0449] In another aspect, the invention concerns an isolated PRO1113polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 616, inclusive of FIG. 16 (SEQ ID NO:24).

[0450] In a further aspect, the invention concerns an isolated PRO1113polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1through 616 of FIG. 16 (SEQ ID NO:24).

[0451] In yet another aspect, the invention concerns an isolated PRO1113polypeptide, comprising the sequence of amino acid residues 1 to about616, inclusive of FIG. 16 (SEQ ID NO:24), or a fragment thereofsufficient to provide a binding site for an anti-PRO1113 antibody.Preferably, the PRO1113 fragment retains a qualitative biologicalactivity of a native PRO1113 polypeptide.

[0452] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1113 polypeptide havingthe sequence of amino acid residues from about 1 to about 616, inclusiveof FIG. 16 (SEQ ID NO:24), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0453] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1113 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1113 antibody.

[0454] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1113 polypeptide, bycontacting the native PRO1113 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0455] In a still further embodiment, the invention concerns acomposition comprising a PRO1113 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0456] 9. PRO1194

[0457] A cDNA clone (DNA57841-1522) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1194.”

[0458] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1194 polypeptide.

[0459] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1194 polypeptide having the sequence of aminoacid residues from 1 or about 22 to about 81, inclusive of FIG. 18 (SEQID NO:29), or (b) the complement of the DNA molecule of (a).

[0460] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1194 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 72 andabout 251, inclusive, of FIG. 17 (SEQ ID NO:28). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0461] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203458 (DNA57841-1522), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203458 (DNA57841-1522).

[0462] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 22 to about 81, inclusive of FIG. 18 (SEQID NO:29), or the complement of the DNA of (a).

[0463] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1194 polypeptide having the sequence of amino acid residues fromabout 22 to about 81, inclusive of FIG. 18 (SEQ ID NO:29), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at. least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0464] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 22to about 81, inclusive of FIG. 18 (SEQ ID NO:29), or (b) the complementof the DNA of (a).

[0465] Another embodiment is directed to fragments of a PRO1194polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0466] In another embodiment, the invention provides isolated PRO1194polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0467] In a specific aspect, the invention provides isolated nativesequence PRO1194 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 22 through 81 of FIG. 18 (SEQ IDNO:29).

[0468] In another aspect, the invention concerns an isolated PRO1194polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues22 to about 81, inclusive of FIG. 18 (SEQ ID NO:29).

[0469] In a further aspect, the invention concerns an isolated PRO1194polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 22through 81 of FIG. 18 (SEQ ID NO:29).

[0470] In yet another aspect, the invention concerns an isolated PRO1194polypeptide, comprising the sequence of amino acid residues 22 to about81, inclusive of FIG. 18 (SEQ ID NO:29), or a fragment thereofsufficient to provide a binding site for an anti-PRO1194 antibody.Preferably, the PRO1194 fragment retains a qualitative biologicalactivity of a native PRO1194 polypeptide.

[0471] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1194 polypeptide havingthe sequence of amino acid residues from about 22 to about 81, inclusiveof FIG. 18 (SEQ ID NO:29), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0472] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1194 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1194 antibody.

[0473] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1194 polypeptide, bycontacting the native PRO1194 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0474] In a still further embodiment, the invention concerns acomposition comprising a PRO1 194 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0475] 10. PRO1110

[0476] A cDNA clone (DNA58727-1474) has been identified, having homologyto nucleic acid encoding myeloid upregulated protein that encodes anovel polypeptide, designated in the present application as “PRO1110”.

[0477] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1110 polypeptide.

[0478] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1110 polypeptide having the sequence of aminoacid residues from about 1 to about 322, inclusive of FIG. 20 (SEQ IDNO:31), or (b) the complement of the DNA molecule of (a).

[0479] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1110 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 131 andabout 1096, inclusive, of FIG. 19 (SEQ ID NO:30). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0480] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203171 (DNA58727-1474) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203171 (DNA58727-1474).

[0481] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 322, inclusive of FIG. 20 (SEQ ID NO:31), or (b) the complement of the DNA of (a).

[0482] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1110 polypeptide having the sequence of amino acidresidues from 1 to about 322, inclusive of FIG. 20 (SEQ ID NO:3 1), or(b) the complement of the DNA molecule of (a), and, if the DNA moleculehas at least about an 80% sequence identity, prefereably at least aboutan 85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0483] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1110 polypeptide,with orwithout the initiating methionine and its soluble, i.e., transmembranedomain deleted or inactivated variants, or is complementary to suchencoding nucleic acid molecule. The transmembrane domains have beententatively identified as extending from about amino acid position 41 toabout amino acid position 60, from about amino acid position 66 to aboutamino acid position 85, from about amino acid position 101 to aboutamino acid position 120, from about amino acid position 137 to aboutamino acid position 153, from about amino acid position 171 to aboutamino acid position 192, from about amino acid position 205 to aboutamino acid position 226, from about amino acid position 235 to aboutamino acid position 255, and from about amino acid position 294 to aboutamino acid position 312 in the PRO11 1 amino acid sequence (FIG. 20, SEQID NO:31).

[0484] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 322, inclusive of FIG. 20 (SEQ ID NO:3 1), or (b) thecomplement of the DNA of (a).

[0485] Another embodiment is directed to fragments of a PRO1110polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 19 (SEQ ID NO:30).

[0486] In another embodiment, the invention provides isolated PRO1110polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0487] In a specific aspect, the invention provides isolated nativesequence PRO1110 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 322 of FIG. 20 (SEQID NO:31).

[0488] In another aspect, the invention concerns an isolated PRO1110polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 322, inclusive of FIG. 20 (SEQ ID NO:3 1).

[0489] In a further aspect, the invention concerns an isolated PRO1110polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 toabout 322, inclusive of FIG. 20 (SEQ ID NO:31).

[0490] In yet another aspect, the invention concerns an isolated PRO1110polypeptide, comprising the sequence of amino acid residues 1 to about322, inclusive of FIG. 20 (SEQ ID NO:31), or a fragment thereofsufficient to provide a binding site for an anti-PRO1110 antibody.Preferably, the PRO1110 fragment retains a qualitative biologicalactivity of a native PRO11 10 polypeptide.

[0491] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1110 polypeptide havingthe sequence of amino acid residues from about 1 to about 322, inclusiveof FIG. 20 (SEQ ID NO:31), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0492] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1110 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1110 antibody.

[0493] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1110 polypeptide bycontacting the native PRO1110 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0494] In a still further embodiment, the invention concerns acomposition comprising a PRO1110 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0495] 11. PRO1378

[0496] A cDNA clone (DNA58730-1607) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1378”.

[0497] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1378 polypeptide.

[0498] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1378 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 335, inclusive of FIG. 22 (SEQID NO:33), or (b) the complement of the DNA molecule of (a).

[0499] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1378 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 1365 andabout 2369, inclusive, of FIG. 21 (SEQ ID NO:32). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0500] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203221 (DNA58730-1607), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203221 (DNA58730-1607).

[0501] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from 1 or about 16 to about 335, inclusive of FIG.22 (SEQ ID NO:33), or the complement of the DNA of (a).

[0502] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 20 nucleotides, preferably at leastabout 50 nucleotides, and more preferably at least about 100 nucleotidesand produced by hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1378 polypeptide havingthe sequence of amino acid residues from about 16 to about 335,inclusive of FIG. 22 (SEQ ID NO:33), or (b) the complement of the DNAmolecule of (a), and, if the DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), isolating the testDNA molecule.

[0503] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1378 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 15 in the sequence of FIG. 22 (SEQ ID NO:33).

[0504] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 16to about 335, inclusive of FIG. 22 (SEQ ID NO:33), or (b) the complementof the DNA of (a).

[0505] Another embodiment is directed to fragments of a PRO1 378polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0506] In another embodiment, the invention provides isolated PRO1378polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0507] In a specific aspect, the invention provides isolated nativesequence PRO1378 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 16 to 335 of FIG. 22 (SEQ ID NO:33).

[0508] In another aspect, the invention concerns an isolated PRO1378polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues16 to about 335, inclusive of FIG. 22 (SEQ ID NO:33).

[0509] In a further aspect, the invention concerns an isolated PRO1378polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 16 to335 of FIG. 22 (SEQ ID NO:33).

[0510] In yet another aspect, the invention concerns an isolated PRO1378polypeptide, comprising the sequence of amino acid residues 16 to about335, inclusive of FIG. 22 (SEQ ID NO:33), or a fragment thereofsufficient to provide a binding site for an anti-PRO1378 antibody.Preferably, the PRO1378 fragment retains a qualitative biologicalactivity of a native PRO1378 polypeptide.

[0511] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1378 polypeptide havingthe sequence of amino acid residues from about 16 to about 335,inclusive of FIG. 22 (SEQ ID NO:33), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0512] 12. PRO1481

[0513] A cDNA clone (DNA58732-1650) has been identified that encodes anovel polypeptide designated in the present application as “PRO1481.”

[0514] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1481 polypeptide.

[0515] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1481 polypeptide having the sequence of aminoacid residues from 1 or about 24 to about 334, inclusive of FIG. 24 (SEQID NO:41), or (b) the complement of the DNA molecule of (a).

[0516] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1481 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 88 andabout 1321, inclusive, of FIG. 23 (SEQ ID NO:40). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0517] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein CDNA in ATCCDeposit No. 203290 (DNA58732-1650), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203290 (DNA58732-1650).

[0518] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 24 to about 334, inclusive of FIG. 24(SEQ ID NO:41), or the complement of the DNA of (a).

[0519] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1481 polypeptide having the sequence of amino acid residues fromabout 24 to about 334, inclusive of FIG. 24 (SEQ ID NO:41), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0520] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1481 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted, truncated orinactivated variants, or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position23 in the sequence of FIG. 24 (SEQ ID NO:41). The transmembrane domainhas been tentatively identified as extending from about amino acidposition 235 through about amino acid position 262 in the PRO1481 aminoacid sequence (FIG. 24, SEQ ID NO:41).

[0521] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 24to about 334, inclusive of FIG. 24 (SEQ ID NO:41), or (b) the complementof the DNA of (a).

[0522] Another embodiment is directed to fragments of a PRO1481polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0523] In another embodiment, the invention provides isolated PRO1481polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0524] In a specific aspect, the invention provides isolated nativesequence PRO1481 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 24 through 334 of FIG. 24 (SEQ IDNO:41).

[0525] In another aspect, the invention concerns an isolated PRO1481polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues24 to about 334, inclusive of FIG. 24 (SEQ ID NO:41).

[0526] In a further aspect, the invention concerns an isolated PRO1481polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 24through 334 of FIG. 24 (SEQ ID NO:41).

[0527] In yet another aspect, the invention concerns an isolated PRO1481polypeptide, comprising the sequence of amino acid residues 24 to about334, inclusive of FIG. 24 (SEQ ID NO:41), or a fragment thereofsufficient to provide a binding site for an anti-PRO1481 antibody.Preferably, the PRO1481 fragment retains a qualitative biologicalactivity of a native PRO1481 polypeptide.

[0528] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1481 polypeptide havingthe sequence of amino acid residues from about 24 to about 334,inclusive of FIG. 24 (SEQ ID NO:41), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0529] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1481 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1481 antibody.

[0530] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1481 polypeptide, bycontacting the native PRO1481 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0531] In a still further embodiment, the invention concerns acomposition comprising a PRO1481 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0532] 13. PRO1189

[0533] A cDNA clone (DNA58828-1519) has been identified that encodes anovel polypeptide having homology to E25 which is designated in thepresent application as “PRO1189. ”

[0534] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1189 polypeptide.

[0535] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1189 polypeptide having the sequence of aminoacid residues from about 1 to about 263, inclusive of FIG. 26 (SEQ IDNO:43), or (b) the complement of the DNA molecule of (a).

[0536] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1189 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 79 andabout 867, inclusive, of FIG. 25 (SEQ ID NO:42). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0537] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203172 (DNA58828-1519), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203172 (DNA58828-1519).

[0538] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 263, inclusive of FIG. 26 (SEQID NO:43), or the complement of the DNA of (a).

[0539] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1 189 polypeptide having the sequence of amino acid residues fromabout 1 to about 263, inclusive of FIG. 26 (SEQ ID NO:43), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0540] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1189 polypeptide with itstransmembrane domain deleted or inactivated, or is complementary to suchencoding nucleic acid molecule. The transmembrane domain has beententatively identified as extending from about amino acid position 53through about amino acid position 75 in the PRO1189 amino acid sequence(FIG. 26, SEQ ID NO:43).

[0541] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 263, inclusive of FIG. 26 (SEQ ID NO:43), or (b) the complementof the DNA of (a).

[0542] Another embodiment is directed to fragments of a PRO1189polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0543] In another embodiment, the invention provides isolated PRO1 189polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0544] In a specific aspect, the invention provides isolated nativesequence PRO1189 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 263 of FIG. 26 (SEQ ID NO:43).

[0545] In another aspect, the invention concerns an isolated PRO1189polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 263, inclusive of FIG. 26 (SEQ ID NO:43).

[0546] In a further aspect, the invention concerns an isolated PRO1189polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to263 of FIG. 26 (SEQ ID NO:43).

[0547] In yet another aspect, the invention concerns an isolated PRO1189 polypeptide, comprising the sequence of amino acid residues 1 toabout 263, inclusive of FIG. 26 (SEQ ID NO:43), or a fragment thereofsufficient to provide a binding site for an anti-PRO1189 antibody.Preferably, the PRO1189 fragment retains a qualitative biologicalactivity of a native PRO1189 polypeptide.

[0548] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1189 polypeptide havingthe sequence of amino acid residues from about 1 to about 263, inclusiveof FIG. 26 (SEQ ID NO:43), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at Feast about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0549] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1189 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1189 antibody.

[0550] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1189 polypeptide, bycontacting the native PRO1189 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0551] In a still further embodiment, the invention concerns acomposition comprising a PRO1 189 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0552] 14. PRO1415

[0553] A cDNA clone (DNA58852-1637) has been identified that encodes anovel polypeptide, designated in the present application as “PRO1415”.

[0554] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1415 polypeptide.

[0555] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1415 polypeptide having the sequence of aminoacid residues from about 1 or about 26 to about 283, inclusive of FIG.28 (SEQ ID NO:50), or (b) the complement of the DNA molecule of (a).

[0556] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1415 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 148 orabout 223 and about 996, inclusive, of FIG. 27 (SEQ ID NO:49).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0557] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203271 (DNA58852-1637) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203271 (DNA58852-1637).

[0558] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 26 to about 283, inclusive of FIG. 28(SEQ ID NO:50), or (b) the complement of the DNA of (a).

[0559] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1415 polypeptide having the sequence of aminoacid residues from 1 or about 26 to about 283, inclusive of FIG. 28 (SEQID NO:50), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0560] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1415 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 25 in thesequence of FIG. 28 (SEQ ID NO:50). The transmembrane domain has beententatively identified as extending from about amino acid position 94 toabout amino acid position 118 in the PRO1415 amino acid sequence (FIG.28, SEQ ID NO:50).

[0561] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 26 to about 283, inclusive of FIG. 28 (SEQ ID NO:50), or (b)the complement of the DNA of (a).

[0562] Another embodiment is directed to fragments of a PRO1415polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 27 (SEQ ID NO:49).

[0563] In another embodiment, the invention provides isolated PRO1415polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0564] In a specific aspect, the invention provides isolated nativesequence PRO1415 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 26 to about 283 ofFIG. 28 (SEQ ID NO:50).

[0565] In another aspect, the invention concerns an isolated PRO1415polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 26 to about 283, inclusive of FIG. 28 (SEQ ID NO:50).

[0566] In a further aspect, the invention concerns an isolated PRO1415polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 26 to about 283, inclusive of FIG. 28 (SEQ ID NO:50).

[0567] In yet another aspect, the invention concerns an isolated PRO1415polypeptide, comprising the sequence of amino acid residues 1 or about26 to about 283, inclusive of FIG. 28 (SEQ ID NO:50), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1415antibody. Preferably, the PRO1415 fragment retains a qualitativebiological activity of a native PRO1415 polypeptide.

[0568] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1415 polypeptide havingthe sequence of amino acid residues from about 1 or about 26 to about283, inclusive of FIG. 28 (SEQ ID NO:50), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90 % sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0569] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1415 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1415 antibody.

[0570] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1415 polypeptide bycontacting the native PRO1415 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0571] In a still further embodiment, the invention concerns acomposition comprising a PRO1415 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0572] 15. PRO1411

[0573] A cDNA clone (DNA59212-1627) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1411.”

[0574] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1411 polypeptide.

[0575] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO141 1 polypeptide having the sequence of aminoacid residues from 1 or about 22 to about 440, inclusive of FIG. 30 (SEQID NO:52), or (b) the complement of the DNA molecule of (a).

[0576] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1411 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 247 andabout 1503, inclusive, of FIG. 29 (SEQ ID NO:51). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0577] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203245 (DNA59212-1627), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203245 (DNA59212-1627).

[0578] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 22 to about 440, inclusive of FIG. 30(SEQ ID NO:52), or the complement of the DNA of (a).

[0579] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1411 polypeptide having the sequence of amino acid residues fromabout 22 to about 440, inclusive of FIG. 30 (SEQ ID NO:52), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0580] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 22to about 440, inclusive of FIG. 30 (SEQ ID NO:52), or (b) the complementof the DNA of (a).

[0581] Another embodiment is directed to fragments of a PRO1411polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0582] In another embodiment, the invention provides isolated PRO141 1polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0583] In a specific aspect, the invention provides isolated nativesequence PRO1411 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 22 through 440 of FIG. 30 (SEQ IDNO:52).

[0584] In another aspect, the invention concerns an isolated PRO1411polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues22 to about 440, inclusive of FIG. 30 (SEQ ID NO:52).

[0585] In a further aspect, the invention concerns an isolated PRO141 1polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 22through 440 of FIG. 30 (SEQ ID NO:52). In yet another aspect, theinvention concerns an isolated PRO141 1 polypeptide, comprising thesequence of amino acid residues 22 to about 440, inclusive of FIG. 30(SEQ ID NO:52), or a fragment thereof sufficient to provide a bindingsite for an anti-PRO141 1 antibody. Preferably, the PRO1411 fragmentretains a qualitative biological activity of a native PRO1411polypeptide.

[0586] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1411 polypeptide havingthe sequence of amino acid residues from about 22 to about 440,inclusive of FIG. 30 (SEQ ID NO:52), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0587] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1411 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1411 antibody.

[0588] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1411 polypeptide, bycontacting the native PRO1411 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0589] In a still further embodiment, the invention concerns acomposition comprising a PRO1411 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0590] 16. PRO1295

[0591] A cDNA clone (DNA59218-1559) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1295.”

[0592] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1295 polypeptide.

[0593] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1295 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 280, inclusive of FIG. 32 (SEQID NO:54), or (b) the complement of the DNA molecule of (a).

[0594] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1295 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 261 andabout 1046, inclusive, of FIG. 31 (SEQ ID NO:53). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0595] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203287 (DNA59218-1559), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203287 (DNA59218-1559).

[0596] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 280, inclusive of FIG. 32(SEQ ID NO:54), or the complement of the DNA of (a).

[0597] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1295 polypeptide having the sequence of amino acid residues fromabout 19 to about 280, inclusive of FIG. 32 (SEQ ID NO:54), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0598] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 280, inclusive of FIG. 32 (SEQ ID NO:54), or (b) the complementof the DNA of (a).

[0599] Another embodiment is directed to fragments of a PRO1295polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0600] In another embodiment, the invention provides isolated PRO1295polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0601] In a specific aspect, the invention provides isolated nativesequence PRO1295 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 through 280 of FIG. 32 (SEQ IDNO:54).

[0602] In another aspect, the invention concerns an isolated PRO1295polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 9 0% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 280, inclusive of FIG. 32 (SEQ ID NO:54).

[0603] In a further aspect, the invention concerns an isolated PRO1295polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19through 280 of FIG. 32 (SEQ ID NO:54).

[0604] In yet another aspect, the invention concerns an isolated PRO1295polypeptide, comprising the sequence of amino acid residues 19 to about280, inclusive of FIG. 32 (SEQ ID NO:54), or a fragment thereofsufficient to provide a binding site for an anti-PRO1295 antibody.Preferably, the PRO1295 fragment retains a qualitative biologicalactivity of a native PRO1295 polypeptide.

[0605] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1295 polypeptide havingthe sequence of amino acid residues from about 19 to about 280,inclusive of FIG. 32 (SEQ ID NO:54), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0606] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1295 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1295 antibody.

[0607] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1295 polypeptide, bycontacting the native PRO1295 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0608] In a still further embodiment, the invention concerns acomposition comprising a PRO1295 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0609] 17. PRO1359

[0610] A cDNA clone (DNA59219- 1613) has been identified that encodes anovel polypeptide having sequence identity with sialytransferases anddesignated in the present application as “PRO1359” polypeptides.

[0611] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1359 polypeptide.

[0612] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1359 polypeptide having the sequence of aminoacid residues from 1 or about 32 to about 299, inclusive of FIG. 34 (SEQID NO:56), or (b) the complement of the DNA molecule of (a).

[0613] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1359 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 277 andabout 1080, inclusive, of FIG. 33 (SEQ ID NO:55). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0614] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203220 (DNA59219-1613), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203220 (DNA59219-1613).

[0615] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 32 to about 299, inclusive of FIG. 34(SEQ ID NO:56), or the complement of the DNA of (a).

[0616] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1359 polypeptide having the sequence of amino acid residues fromabout 32 to about 299, inclusive of FIG. 34 (SEQ ID NO:56), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0617] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1359 polypeptide in itssoluble, i.e. transmembrane domain deleted or inactivated variants, oris complementary to such encoding nucleic acid molecule. Thetransmembrane domain (type II) has been tentatively identified asextending from about amino acid position 9 through about amino acidposition 31 in the PRO1359 amino acid sequence (FIG. 34, SEQ ID NO:56).

[0618] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 32to about 299, inclusive of FIG. 34 (SEQ ID NO:56), or (b) the complementof the DNA of (a).

[0619] Another embodiment is directed to fragments of a PRO1 359polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0620] In another embodiment, the invention provides isolated PRO1359polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0621] In a specific aspect, the invention provides isolated nativesequence PRO1359 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 32 through 299 of FIG. 34 (SEQ IDNO:56).

[0622] In another aspect, the invention concerns an isolated PRO1359polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues32 to about 299, inclusive of FIG. 34 (SEQ ID NO:56).

[0623] In a further aspect, the invention concerns an isolated PRO1359polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 32through 299 of FIG. 34 (SEQ ID NO:56).

[0624] In yet another aspect, the invention concerns an isolated PRO1359polypeptide, comprising the sequence of amino acid residues 32 to about299, inclusive of FIG. 34 (SEQ ID NO:56), or a fragment thereofsufficient to provide a binding site for an anti-PRO1359 antibody.Preferably, the PRO1359 fragment retains a qualitative biologicalactivity of a native PRO1359 polypeptide.

[0625] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1359 polypeptide havingthe sequence of amino acid residues from about 32 to about 299,inclusive of FIG. 34 (SEQ ID NO:56), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0626] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1359 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1359 antibody.

[0627] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1359 polypeptide, bycontacting the native PRO1359 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0628] In a still further embodiment, the invention concerns acomposition comprising a PRO1359 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0629] 18. PRO1190

[0630] A cDNA clone (DNA59586-1520) has been identified that encodes anovel polypeptide designated in the present application as “PRO1190”,and which has homology to CDO protein.

[0631] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1190 polypeptide.

[0632] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO01 190 polypeptide having the sequence of aminoacid residues from about 1 to about 1115, inclusive of FIG. 36 (SEQ IDNO:58), or (b) the complement of the DNA molecule of (a).

[0633] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1190 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 340 andabout 3684, inclusive, of FIG. 35 (SEQ ID NO:58). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0634] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203288 (DNA59586-1520), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203288 (DNA59586-1520).

[0635] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 1115, inclusive of FIG. 36(SEQ ID NO:58), or the complement of the DNA of (a).

[0636] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1190 polypeptide having the sequence of amino acid residues fromabout 1 to about 1115, inclusive of FIG. 36 (SEQ ID NO:58), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0637] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1190 polypeptide, with one ormore of its transmembrane domains deleted or inactivated variants, or iscomplementary to such encoding nucleic acid molecule. The transmembranedomains have been tentatively identified in the PRO1190 amino acidsequence shown in FIG. 36 (SEQ ID NO:58) as extending from about aminoacid position 16 to about amino acid position 30 and from about aminoacid position 854 to about amino acid position 879.

[0638] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 1115, inclusive of FIG. 36 (SEQ ID NO:58), or (b) thecomplement of the DNA of (a).

[0639] Another embodiment is directed to fragments of a PRO1190polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0640] In another embodiment, the invention provides isolated PRO1190polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0641] In a specific aspect, the invention provides isolated nativesequence PRO1190 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 1115 of FIG. 36 (SEQ ID NO:58).

[0642] In another aspect, the invention concerns an isolated PRO1190polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 1115, inclusive of FIG. 36 (SEQ ID NO:58).

[0643] In a further aspect, the invention concerns an isolated PRO1190polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to1115 of FIG. 36 (SEQ ID NO:58).

[0644] In yet another aspect, the invention concerns an isolated PRO1190polypeptide, comprising the sequence of amino acid residues 1 to about1115, inclusive of FIG. 36 (SEQ ID NO:58), or a fragment thereofsufficient to provide a binding site for an anti-PRO1190 antibody.Preferably, the PRO1190 fragment retains a qualitative biologicalactivity of a native PRO1190 polypeptide.

[0645] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1190 polypeptide havingthe sequence of amino acid residues from about 1 to about 1115,inclusive of FIG. 36 (SEQ ID NO:58), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0646] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1190 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1190 antibody.

[0647] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1190 polypeptide, bycontacting the native PRO1190 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0648] In a still further embodiment, the invention concerns acomposition comprising a PRO1190 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0649] 19. PRO1772

[0650] A cDNA clone (DNA59817-1703) has been identified, having homologyto nucleic acid encoding peptidase enzymes, that encodes a novelpolypeptide, designated in the present application as “PRO1772”.

[0651] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1772 polypeptide.

[0652] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1772 polypeptide having the sequence of aminoacid residues from about 1 or about 37 to about 487, inclusive of FIG.38 (SEQ ID NO:63), or (b) the complement of the DNA molecule of (a).

[0653] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1772 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 93 orabout 201 and about 1553, inclusive, of FIG. 37 (SEQ ID NO:62).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0654] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203470 (DNA59817-1703) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203470 (DNA59817-1703).

[0655] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 37 to about 487, inclusive of FIG. 38(SEQ ID NO:63), or (b) the complement of the DNA of (a).

[0656] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 415 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1772 polypeptide having the sequence of aminoacid residues from 1 or about 37 to about 487, inclusive of FIG. 38 (SEQID NO:63), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0657] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1772 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 36 in thesequence of FIG. 38 (SEQ ID NO:63). The transmembrane domain has beententatively identified as extending from about amino acid position 313to about amino acid position 331 in the PRO1772 amino acid sequence(FIG. 38, SEQ ID NO:63).

[0658] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 37 to about 487, inclusive of FIG. 38 (SEQ ID NO:63), or (b)the complement of the DNA of (a).

[0659] Another embodiment is directed to fragments of a PRO1772polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 37 (SEQ ID NO:62).

[0660] In another embodiment, the invention provides isolated PRO1772polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0661] In a specific aspect, the invention provides isolated nativesequence PRO1772 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 37 to about 487 ofFIG. 38 (SEQ ID NO:63).

[0662] In another aspect, the invention concerns an isolated PRO1772polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 37 to about 487, inclusive of FIG. 38 (SEQ ID NO:63).

[0663] In a further aspect, the invention concerns an isolated PRO1772polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 37 to about 487, inclusive of FIG. 38 (SEQ ID NO:63).

[0664] In yet another aspect, the invention concerns an isolated PRO1772polypeptide, comprising the sequence of amino acid residues 1 or about37 to about 487, inclusive of FIG. 38 (SEQ ID NO:63), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1772antibody. Preferably, the PRO1772 fragment retains a qualitativebiological activity of a native PRO1772 polypeptide.

[0665] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1772 polypeptide havingthe sequence of amino acid residues from about 1 or about 37 to about487, inclusive of FIG. 38 (SEQ ID NO:63), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90 % sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0666] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1772 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1772 antibody.

[0667] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1772 polypeptide bycontacting the native PRO1772 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0668] In a still further embodiment, the invention concerns acomposition comprising a PRO1772 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0669] 20. PRO1248

[0670] A cDNA clone (DNA60278-1530) has been identified, having homologyto nucleic acid encoding PUT-2, that encodes a novel polypeptide,designated in the present application as “PRO1248”.

[0671] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1248 polypeptide.

[0672] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1248 polypeptide having the sequence of aminoacid residues from about 1 or about 21 to about 183, inclusive of FIG.40 (SEQ ID NO:68), or (b) the complement of the DNA molecule of (a).

[0673] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1248 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 122 orabout 182 and about 670, inclusive, of FIG. 39 (SEQ ID NO:67).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0674] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203170 (DNA60278-1530) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203170 (DNA60278-1530).

[0675] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 21 to about 183, inclusive of FIG. 40(SEQ ID NO:68), or (b) the complement of the DNA of (a).

[0676] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1248 polypeptide having the sequence of amino acidresidues from 1 or about 21 to about 183, inclusive of FIG. 40 (SEQ IDNO:68), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0677] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1248 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 20 in thesequence of FIG. 40 (SEQ ID NO:68). The transmembrane domain has beententatively identified as extending from about amino acid position 90 toabout amino acid position 112 in the PRO1248 amino acid sequence (FIG.40, SEQ ID NO:68).

[0678] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 21 to about 183, inclusive of FIG. 40 (SEQ ID NO:68), or (b)the complement of the DNA of (a).

[0679] Another embodiment is directed to fragments of a PRO1248polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 39 (SEQ ID NO:67).

[0680] In another embodiment, the invention provides isolated PRO1248polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0681] In a specific aspect, the invention provides isolated nativesequence PRO1248 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 21 to about 183 ofFIG. 40 (SEQ ID NO:68).

[0682] In another aspect, the invention concerns an isolated PRO1248polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 21 to about 183, inclusive of FIG. 40 (SEQ ID NO:68).

[0683] In a further aspect, the invention concerns an isolated PRO1248polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 21 to about 183, inclusive of FIG. 40 (SEQ ID NO:68).

[0684] In yet another aspect, the invention concerns an isolated PRO1248polypeptide, comprising the sequence of amino acid residues 1 or about21 to about 183, inclusive of FIG. 40 (SEQ ID NO:68), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1248antibody. Preferably, the PRO1248 fragment retains a qualitativebiological activity of a native PRO1248 polypeptide.

[0685] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1248 polypeptide havingthe sequence of amino acid residues from about 1 or about 21 to about183, inclusive of FIG. 40 (SEQ ID NO:68), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0686] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1248 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1248 antibody.

[0687] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1248 polypeptide bycontacting the native PRO1248 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0688] In a still further embodiment, the invention concerns acomposition comprising a PRO1248 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0689] 21. PRO1316

[0690] A cDNA clone (DNA60608-1577) has been identified, having homologyto Dickkopf that encodes a novel polypeptide, designated in the presentapplication as “PRO1316.”

[0691] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1316 polypeptide.

[0692] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1316 polypeptide having the sequence of aminoacid residues from 1 or about 26 to about 259, inclusive of FIG. 42 (SEQID NO:70), or (b) the complement of the DNA molecule of (a).

[0693] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1316 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 281 andabout 987, inclusive, of FIG. 41 (SEQ ID NO:69). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0694] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203126 (DNA60608-1577), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203126 (DNA60608-1577).

[0695] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 26 to about 259, inclusive of FIG. 42(SEQ ID NO:70), or the complement of the DNA of (a).

[0696] In a further aspect, the invention concern an isolated nucleicacid molecule having at least 15 nucleotides which hybridizes understringent conditions with (a) a DNA molecule having a identity with aregion spanning either from residues 1-454 or from residues 1095-3130 ofthe FIG. 41 (SEQ ID NO:69), or (b) the complement of the DNA molecule of(a). Alternatively, an isolated nucleic acid molecule having at least 15nucleotides having at least about 80% sequence identity, preferably atleast about 85% sequence identity, more preferably at least about 90%sequence identity, and most preferably at least about 95% sequenceidentity to:(a) a DNA molecule having a identity with a region spanningeither from residues 1-454 or from residues 1095-3130 of the FIG. 41(SEQ ID NO:69), or (b) the complement of the DNA molecule of (a).

[0697] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1316 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 to about amino acid position 25 in the sequence ofFIG. 42 (SEQ ID NO:70). An N-glycosylation site has been identified atposition 52 and a fungal Zn(2)-Cys(6) binuclear cluster has beenidentified at position 99.

[0698] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 26to about 259, inclusive of FIG. 42 (SEQ ID NO:70), or (b) the complementof the DNA of (a).

[0699] In another embodiment, the invention provides isolated PRO1316polypeptide encoded by any of the isolated nucleic acid sequences hereinabove defined.

[0700] In a specific aspect, the invention provides isolated nativesequence PRO1316 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 26 to 259 of FIG. 42 (SEQ ID NO:70).

[0701] In another aspect, the invention concerns an isolated PRO1316polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues26 to about 259, inclusive of FIG. 42 (SEQ ID NO:70).

[0702] In a further aspect, the invention concerns an isolated PRO1316polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 26 to259 of FIG. 42 (SEQ ID NO:70).

[0703] In yet another aspect, the invention concerns an isolated PRO1316polypeptide, comprising the sequence of amino acid residues 26 to about259, inclusive of FIG. 42 (SEQ ID NO:70), or a fragment thereofsufficient to provide a binding site for an anti-PRO1316 antibody.Preferably, the PRO1316 fragment retains a qualitative biologicalactivity of a native PRO1316 polypeptide.

[0704] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1316 polypeptide havingthe sequence of amino acid residues from about 26 to about 259,inclusive of FIG. 42 (SEQ ID NO:70), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0705] In yet another embodiment, the invention concerns agonists andantagonists of the a native PRO1316 polypeptide. In a particularembodiment, the agonist or antagonist is an anti-PRO1316 antibody.

[0706] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1316 polypeptide, bycontacting the native PRO1316 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0707] In a still further embodiment, the invention concerns acomposition comprising a PRO1316 polypeptide, or an agonist orantagonist as herein above defined, in combination with apharmaceutically acceptable carrier.

[0708] 5 22. PRO1197

[0709] A cDNA clone (DNA60611-1524) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1 197.”

[0710] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1197 polypeptide.

[0711] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1 197 polypeptide having the sequence of aminoacid residues from 1 or about 25 to about 363, inclusive of FIG. 44 (SEQID NO:72), or (b) the complement of the DNA molecule of (a).

[0712] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1 197 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 383 andabout 1399, inclusive, of FIG. 43 (SEQ ID NO:71). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0713] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203175 (DNA60611-1524), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203175 (DNA60611-1524).

[0714] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 25 to about 363, inclusive of FIG. 44(SEQ ID NO:72), or the complement of the DNA of (a).

[0715] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1 197 polypeptide having the sequence of amino acid residues fromabout 25 to about 363, inclusive of FIG. 44 (SEQ ID NO:72), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0716] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 25to about 363, inclusive of FIG. 44 (SEQ ID NO:72), or (b) the complementof the DNA of (a).

[0717] Another embodiment is directed to fragments of a PRO1 197polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0718] In another embodiment, the invention provides isolated PRO1 197polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0719] In a specific aspect, the invention provides isolated nativesequence PRO1 197 polypeptide, which in one embodiment, includes anamino acid sequence comprising residues 25 through 363 of FIG. 44 (SEQID NO:72).

[0720] In another aspect, the invention concerns an isolated PRO1197polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues25 to about 363, inclusive of FIG. 44 (SEQ ID NO:72).

[0721] In a further aspect, the invention concerns an isolated PRO I197polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 25through 363 of FIG. 44 (SEQ ID NO:72).

[0722] In yet another aspect, the invention concerns an isolated PRO1197polypeptide, comprising the sequence of amino acid residues 25 to about363, inclusive of FIG. 44 (SEQ ID NO:72), or a fragment thereofsufficient to provide a binding site for an anti-PRO1 197 antibody.Preferably, the PRO1 197 fragment retains a qualitative biologicalactivity of a native PRO1197 polypeptide.

[0723] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1 197 polypeptidehaving the sequence of amino acid residues from about 25 to about 363,inclusive of FIG. 44 (SEQ ID NO:72), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0724] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1197 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1197 antibody.

[0725] 23. PRO1293

[0726] A cDNA clone (DNA60618-1557) has been identified, having homologyto nucleic acid encoding an imnnunoglobulin heavy chain variable regionprotein that encodes a novel polypeptide, designated in the presentapplication as “PRO1293”.

[0727] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1293 polypeptide.

[0728] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1293 polypeptide having the sequence of aminoacid residues from about 1 or about 20 to about 341, inclusive of FIG.46 (SEQ ID NO:77), or (b) the complement of the DNA molecule of (a).

[0729] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1293 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 37 orabout 94 and about 1059, inclusive, of FIG. 45 (SEQ ID NO:76).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0730] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203292 (DNA60618-1557) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203292 (DNA60618-1557).

[0731] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 20 to about 341, inclusive of FIG. 46(SEQ ID NO:77), or (b) the complement of the DNA of (a).

[0732] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1293 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 341, inclusive of FIG. 46 (SEQID NO:77), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0733] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1293 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 19 in thesequence of FIG. 46 (SEQ ID NO:77). The transmembrane domain has beententatively identified as extending from about amino acid position 237to about amino acid position 262 in the PRO1293 amino acid sequence(FIG. 46, SEQ ID NO:77).

[0734] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 20 to about 341, inclusive of FIG. 46 (SEQ ID NO:77), or (b)the complement of the DNA of (a).

[0735] Another embodiment is directed to fragments of a PRO1293polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 45 (SEQ ID NO:76).

[0736] In another embodiment, the invention provides isolated PRO1293polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0737] In a specific aspect, the invention provides isolated nativesequence PRO1293 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 20 to about 341 ofFIG. 46 (SEQ ID NO:77).

[0738] In another aspect, the invention concerns an isolated PRO1293polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 20 to about 341, inclusive of FIG. 46 (SEQ ID NO:77).

[0739] In a further aspect, the invention concerns an isolated PRO1293polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 20 to about 341, inclusive of FIG. 46 (SEQ ID NO:77).

[0740] In yet another aspect, the invention concerns an isolated PRO1293polypeptide, comprising the sequence of amino acid residues 1 or about20 to about 341, inclusive of FIG. 46 (SEQ ID NO:77), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1293antibody. Preferably, the PRO1293 fragment retains a qualitativebiological activity of a native PRO1293 polypeptide.

[0741] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1293 polypeptide havingthe sequence of amino acid residues from about 1 or about 20 to about341, inclusive of FIG. 46 (SEQ ID NO:77), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0742] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1293 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1293 antibody.

[0743] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1293 polypeptide bycontacting the native PRO1293 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0744] In a still further embodiment, the invention concerns acomposition comprising a PRO1293 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0745] 24. PRO1380

[0746] A cDNA clone (DNA60740-1615) has been identified that encodes anovel multi-span transmembrane polypeptide designated in the presentapplication as “PRO1380”.

[0747] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1380 polypeptide.

[0748] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1380 polypeptide having the sequence of aminoacid residues from about 1 to about 470, inclusive of FIG. 48 (SEQ IDNO:79), or (b) the complement of the DNA molecule of (a).

[0749] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO01380 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 36 andabout 1460, inclusive, of FIG. 47 (SEQ ID NO:78). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0750] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203456 (DNA60740-1615), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203456 (DNA60740-1615).

[0751] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 470, inclusive of FIG. 48 (SEQID NO:79), or the complement of the DNA of (a).

[0752] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO01380 polypeptide having the sequence of amino acid residues fromabout 1 to about 470, inclusive of FIG. 48 (SEQ ID NO:79), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0753] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO01380 polypeptide, and itssoluble variants (i.e. one or more transmembrane domains deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. Transmembrane domains have been tentatively identified atabout the following amino acid positions:50-74, 105-127, 135-153,163-183, 228-252, 305-330, and 448-472 in the PRO01380 amino acidsequence (FIG. 48, SEQ ID NO:79).

[0754] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 470, inclusive of FIG. 48 (SEQ ID NO:79), or (b) the complementof the DNA of (a).

[0755] Another embodiment is directed to fragments of a PRO1380polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0756] In another embodiment, the invention provides isolated PRO1380polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0757] In a specific aspect, the invention provides isolated nativesequence PRO1380 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 470 of FIG. 48 (SEQ ID NO:79).

[0758] In another aspect, the invention concerns an isolated PRO1380polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 470, inclusive of FIG. 48 (SEQ ID NO:79).

[0759] In a further aspect, the invention concerns an isolated PRO1380polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to470 of FIG. 48 (SEQ ID NO:79).

[0760] In yet another aspect, the invention concerns an isolated PRO1380polypeptide, comprising the sequence of amino acid residues 1 to about470, inclusive of FIG. 48 (SEQ ID NO:79), or a fragment thereofsufficient to provide a binding site for an anti-PRO1380 antibody.Preferably, the PRO1380 fragment retains a qualitative biologicalactivity of a native PRO1380 polypeptide.

[0761] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1380 polypeptide havingthe sequence of amino acid residues from about 1 to about 470, inclusiveof FIG. 48 (SEQ ID NO:79), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0762] 25. PRO1265

[0763] A cDNA clone (DNA60764-1533) has been identified that encodes anovel polypeptide having homology to the FIG. 1 polypeptide anddesignated in the present application as “PRO1265.”

[0764] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1265 polypeptide.

[0765] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1265 polypeptide having the sequence of aminoacid residues from 1 or about about 22 to about 567, inclusive of FIG.50 (SEQ ID NO:84), or (b) the complement of the DNA molecule of (a).

[0766] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1265 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 142 andabout 1779, inclusive, of FIG. 49 (SEQ ID NO:83). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0767] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203452 (DNA60764-1533), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203452 (DNA60764-1533).

[0768] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 22 to about 567, inclusive of FIG. 50(SEQ ID NO:84), or the complement of the DNA of (a).

[0769] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1265 polypeptide having the sequence of amino acid residues fromabout 22 to about 567, inclusive of FIG. 50 (SEQ ID NO:84), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0770] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1265 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 21 in the sequence of FIG.50 (SEQ ID NO:84).

[0771] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 22to about 567, inclusive of FIG. 50 (SEQ ID NO:84), or (b) the complementof the DNA of (a).

[0772] Another embodiment is directed to fragments of a PRO1265polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0773] In another embodiment, the invention provides isolated PRO1265polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0774] In a specific aspect, the invention provides isolated nativesequence PRO1265 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 or about 22 to 567 of FIG. 50 (SEQID NO:84).

[0775] In another aspect, the invention concerns an isolated PRO1265polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues22 to about 567, inclusive of FIG. 50 (SEQ ID NO:84).

[0776] In a further aspect, the invention concerns an isolated PRO1265polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 22 to567 of FIG. 50 (SEQ ID NO:84).

[0777] In yet another aspect, the invention concerns an isolated PRO1265polypeptide, comprising the sequence of amino acid residues 22 to about567, inclusive of FIG. 50 (SEQ ID NO:84), or a fragment thereofsufficient to provide a binding site for an anti-PRO 1265 antibody.Preferably, the PRO1265 fragment retains a qualitative biologicalactivity of a native PRO1265 polypeptide.

[0778] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1265 polypeptide havingthe sequence of amino acid residues from about 22 to about 567,inclusive of FIG. 50 (SEQ ID NO:84), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0779] 26. PRO1250

[0780] A cDNA clone (DNA60775-1532) has been identified, having homologyto nucleic acid encoding long chain fatty acid CoA ligase that encodes anovel polypeptide, designated in the present application as “PRO1250”.

[0781] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1250 polypeptide.

[0782] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1250 polypeptide having the sequence of aminoacid residues from about 1 to about 739, inclusive of FIG. 52 (SEQ IDNO:86), or (b) the complement of the DNA molecule of (a).

[0783] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1250 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 74 andabout 2290, inclusive, of FIG. 51 (SEQ ID NO:85). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0784] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203173 (DNA60775-1532) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203173 (DNA60775-1532).

[0785] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 739, inclusive of FIG. 52 (SEQ ID NO:86),or (b) the complement of the DNA of (a).

[0786] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1250 polypeptide having the sequence of amino acidresidues from 1 to about 739, inclusive of FIG. 52 (SEQ ID NO:86), or(b) the complement of the DNA molecule of (a), and, if the DNA moleculehas at least about an 80% sequence identity, prefereably at least aboutan 85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0787] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1250 polypeptide, with orwithout the initiating methionine, and its soluble, i.e., transmembranedomain deleted or inactivated variants, or is complementary to suchencoding nucleic acid molecule. The type II transmembrane domain hasbeen tentatively identified as extending from about amino acid position61 to about amino acid position 80 in the PRO1250 amino acid sequence(FIG. 52, SEQ ID NO:86).

[0788] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 739, inclusive of FIG. 52 (SEQ ID NO:86), or (b) the complementof the DNA of (a).

[0789] Another embodiment is directed to fragments of a PRO1250polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 51 (SEQ ID NO:85).

[0790] In another embodiment, the invention provides isolated PRO1250polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0791] In a specific aspect, the invention provides isolated nativesequence PRO1250 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 739 of FIG. 52 (SEQID NO:86).

[0792] In another aspect, the invention concerns an isolated PRO1250polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 739, inclusive of FIG. 52 (SEQ ID NO:86).

[0793] In a further aspect, the invention concerns an isolated PRO1250polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 toabout 739, inclusive of FIG. 52 (SEQ ID NO:86).

[0794] In yet another aspect, the invention concerns an isolated PRO1250polypeptide, comprising the sequence of amino acid residues 1 to about739, inclusive of FIG. 52 (SEQ ID NO:86), or a fragment thereofsufficient to provide a binding site for an anti-PRO1250 antibody.Preferably, the PRO1250 fragment retains a qualitative biologicalactivity of a native PRO1250 polypeptide.

[0795] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1250 polypeptide havingthe sequence of amino acid residues from about 1 to about 739, inclusiveof FIG. 52 (SEQ ID NO:86), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0796] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1250 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1250 antibody.

[0797] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1250 polypeptide bycontacting the native PRO1250 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0798] In a still further embodiment, the invention concerns acomposition comprising a PRO1250 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0799] 27. PRO1475

[0800] A cDNA clone (DNA61185-1646) has been identified, having homologyto nucleic acid encoding an N-acetylglucosaminyltransferase that encodesa novel polypeptide, designated in the present application as “PRO1475”.

[0801] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1475 polypeptide.

[0802] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1475 polypeptide having the sequence of aminoacid residues from about 1 to about 660, inclusive of FIG. 54 (SEQ IDNO:88), or (b) the complement of the DNA molecule of (a).

[0803] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1475 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 130 andabout 2109, inclusive, of FIG. 53 (SEQ ID NO:87). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0804] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203464 (DNA61185-1646) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203464 (DNA61185-1646).

[0805] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 660, inclusive of FIG. 54 (SEQ ID NO:88),or (b) the complement of the DNA of (a).

[0806] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 180 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1475 polypeptide having the sequence of aminoacid residues from 1 to about 660, inclusive of FIG. 54 (SEQ ID NO:88),or (b) the complement of the DNA molecule of (a), and, if the DNAmolecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0807] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1475 polypeptide, with orwithout the initiating methionine, and its soluble, i.e., transmembranedomain deleted or inactivated variants, or is complementary to suchencoding nucleic acid molecule. The transmembrane domain has beententatively identified as extending from about amino acid position 38 toabout amino acid position 55 in the PRO1475 amino acid sequence (FIG.54, SEQ ID NO:88).

[0808] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 660, inclusive of FIG. 54 (SEQ ID NO:88), or (b) the complementof the DNA of (a).

[0809] Another embodiment is directed to fragments of a PRO1475polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 53 (SEQ ID NO:87).

[0810] In another embodiment, the invention provides isolated PRO1475polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0811] In a specific aspect, the invention provides isolated nativesequence PRO1475 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 660 of FIG. 54 (SEQID NO:88).

[0812] In another aspect, the invention concerns an isolated PRO1475polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 660, inclusive of FIG. 54 (SEQ ID NO:88).

[0813] In a further aspect, the invention concerns an isolated PRO1475polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 toabout 660, inclusive of FIG. 54 (SEQ ID NO:88).

[0814] In yet another aspect, the invention concerns an isolated PRO1475polypeptide, comprising the sequence of amino acid residues 1 to about660, inclusive of FIG. 54 (SEQ ID NO:88), or a fragment thereofsufficient to provide a binding site for an anti-PRO1475 antibody.Preferably, the PRO1475 fragment retains a qualitative biologicalactivity of a native PRO1475 polypeptide.

[0815] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1475 polypeptide havingthe sequence of amino acid residues from about 1 to about 660, inclusiveof FIG. 54 (SEQ ID NO:88), or (b) the complement of the DNA molecule of(a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0816] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1475 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1475 antibody.

[0817] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1475 polypeptide bycontacting the native PRO1475 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0818] In a still further embodiment, the invention concerns acomposition comprising a PRO1475 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier. 30

[0819] 28. PRO1377

[0820] A cDNA clone (DNA61608-1606) has been identified that encodes anovel multi-span transmembrane polypeptide designated in the presentapplication as “PRO1377. ”

[0821] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1377 polypeptide.

[0822] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1377 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 307, inclusive of FIG. 56 (SEQID NO:95), or (b) the complement of the DNA molecule of (a).

[0823] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1377 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 203 andabout 1069, inclusive, of FIG. 55 (SEQ ID NO:94). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0824] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein CDNA in ATCCDeposit No. 203239 (DNA61608-1606), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203239 (DNA61608-1606).

[0825] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 307, inclusive of FIG. 56(SEQ ID NO:95), or the complement of the DNA of (a).

[0826] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1377 polypeptide having the sequence of amino acid residues fromabout 19 to about 307, inclusive of FIG. 56 (SEQ ID NO:95), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0827] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1377 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and one or more of its transmembrane domains deleted or inactivated, oris complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 18 in the sequence of FIG.56 (SEQ ID NO:95). Transmembrane domain has been tentatively identifiedas extending from about amino acid positions 37-56, 106-122, 211 -20,240-260, and 288-304 in the PRO1377 amino acid sequence (FIG. 56, SEQ IDNO:95).

[0828] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 307, inclusive of FIG. 56 (SEQ ID NO:95), or (b) the complementof the DNA of (a).

[0829] Another embodiment is directed to fragments of a PRO1377polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0830] In another embodiment, the invention provides isolated PRO1377polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0831] In a specific aspect, the invention provides isolated nativesequence PRO1377 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 to 307 of FIG. 56 (SEQ ID NO:95).In another aspect, the invention concerns an isolated PRO1377polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 307, inclusive of FIG. 56 (SEQ ID NO:95).

[0832] In a further aspect, the invention concerns an isolated PRO1377polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19 to307 of FIG. 56 (SEQ ID NO:95).

[0833] In yet another aspect, the invention concerns an isolated PRO1377polypeptide, comprising the sequence of amino acid residues 19 to about307, inclusive of FIG. 56 (SEQ ID NO:95), or a fragment thereofsufficient to provide a binding site for an anti-PRO1377 antibody.Preferably, the PRO1377 fragment retains a qualitative biologicalactivity of a native PRO1377 polypeptide.

[0834] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1377 polypeptide havingthe sequence of amino acid residues from about 19 to about 307,inclusive of FIG. 56 (SEQ ID NO:95), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0835] 29. PRO1326

[0836] A cDNA clone (DNA62808-1582) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1326.”

[0837] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1326 polypeptide.

[0838] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1326 polypeptide having the sequence of aminoacid residues from 1 or about 30 to about 401, inclusive of FIG. 58 (SEQID NO:100), or (b) the complement of the DNA molecule of (a).

[0839] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1326 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 199 andabout 1314, inclusive, of FIG. 57 (SEQ ID NO:99). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0840] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203358 (DNA62808-1582), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203358 (DNA62808-1582).

[0841] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 30 to about 401, inclusive of FIG. 58(SEQ ID NO:100), or the complement of the DNA of (a).

[0842] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1326 polypeptide having the sequence of amino acid residues fromabout 30 to about 401, inclusive of FIG. 58 (SEQ ID NO:100), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0843] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1326 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 29 in the sequence of FIG.58 (SEQ ID NO:100).

[0844] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 30to about 401, inclusive of FIG. 58 (SEQ ID NO:100), or (b) thecomplement of the DNA of (a).

[0845] Another embodiment is directed to fragments of a PRO1326polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0846] In another embodiment, the invention provides isolated PRO1326polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0847] In a specific aspect, the invention provides isolated nativesequence PRO1326 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 30 to 401 of FIG. 58 (SEQ ID NO:100).

[0848] In another aspect, the invention concerns an isolated PRO1326polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues30 to about 401, inclusive of FIG. 58 (SEQ ID NO:100).

[0849] In a further aspect, the invention concerns an isolated PRO1326polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 30 to401 of FIG. 58 (SEQ ID NO:100).

[0850] In yet another aspect, the invention concerns an isolated PRO1326polypeptide, comprising the sequence of amino acid residues 30 to about401, inclusive of FIG. 58 (SEQ ID NO:100), or a fragment thereofsufficient to provide a binding site for an anti-PRO1326 antibody.Preferably, the PRO1326 fragment retains a qualitative biologicalactivity of a native PRO1326 polypeptide.

[0851] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1326 polypeptide havingthe sequence of amino acid residues from about 30 to about 401,inclusive of FIG. 58 (SEQ ID NO:100), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0852] 30. PRO1249

[0853] A cDNA clone (DNA62809-1531) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1249”.

[0854] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1249 polypeptide.

[0855] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1249 polypeptide having the sequence of aminoacid residues from about 1 or about 17 to about 1089, inclusive of FIG.60 (SEQ ID NO:102), or (b) the complement of the DNA molecule of (a).

[0856] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1249 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 3 orabout 51 and about 3269, inclusive, of FIG. 59 (SEQ ID NO:101).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0857] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203237 (DNA62809-153 1) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203237 (DNA62809-1531).

[0858] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 17 to about 1089, inclusive of FIG. 60(SEQ ID NO:102), or (b) the complement of the DNA of (a).

[0859] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1249 polypeptide having the sequence of amino acidresidues from 1 or about 17 to about 1089, inclusive of FIG. 60 (SEQ IDNO:102), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0860] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1249 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 16 in thesequence of FIG. 60 (SEQ ID NO:102). The transmembrane domains have beententatively identified as extending from about amino acid position 317to about amino acid position 341, from about amino acid position 451 toabout amino acid position 470, from about amino acid position 481 toabout amino acid position 500, from about amino acid position 510 toabout amino acid position 527, from about amino acid position 538 toabout amino acid position 555, from about amino acid position 831 toabout amino acid position 850, from about amino acid position 1016 toabout amino acid position 1034 and from about amino acid position 1052to about amino acid position 1070 in the PRO1249 amino acid sequence(FIG. 60, SEQ ID NO:102).

[0861] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 17 to about 1089, inclusive of FIG. 60 (SEQ ID NO:102), or (b)the complement of the DNA of (a).

[0862] Another embodiment is directed to fragments of a PRO1249polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 59 (SEQ ID NO:101).

[0863] In another embodiment, the invention provides isolated PRO1249polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0864] In a specific aspect, the invention provides isolated nativesequence PRO1249 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 17 to about 1089 ofFIG. 60 (SEQ ID NO:102).

[0865] In another aspect, the invention concerns an isolated PRO1249polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 17 to about 1089, inclusive of FIG. 60 (SEQ ID NO:102).

[0866] In a further aspect, the invention concerns an isolated PRO1249polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 17 to about 1089, inclusive of FIG. 60 (SEQ ID NO:102).

[0867] In yet another aspect, the invention concerns an isolated PRO1249polypeptide, comprising the sequence of amino acid residues 1 or about17 to about 1089, inclusive of FIG. 60 (SEQ ID NO:102), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1249antibody. Preferably, the PRO1249 fragment retains a qualitativebiological activity of a native PRO1249 polypeptide.

[0868] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1249 polypeptide havingthe sequence of amino acid residues from about 1 or about 17 to about1089, inclusive of FIG. 60 (SEQ ID NO:102), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0869] 31. PRO1315

[0870] A cDNA clone (DNA62815-1576) has been identified, having homologyto nucleic acid encoding cytokine receptor family-4 proteins thatencodes a novel polypeptide, designated in the present application as“PRO1315 ”.

[0871] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1315 polypeptide.

[0872] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1315 polypeptide having the sequence of aminoacid residues from about 1 or about 29 to about 442, inclusive of FIG.62 (SEQ ID NO:104), or (b) the complement of the DNA molecule of (a).

[0873] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1315 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 121 orabout 205 and about 1446, inclusive, of FIG. 61 (SEQ ID NO:103).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0874] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203247 (DNA62815-1576) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203247 (DNA62815-1576).

[0875] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 29 to about 442, inclusive of FIG. 62(SEQ ID NO:104), or (b) the complement of the DNA of (a).

[0876] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 500 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1315 polypeptide having the sequence of aminoacid residues from 1 or about 29 to about 442, inclusive of FIG. 62 (SEQID NO:104), or (b) the complement of the DNA molecule of (a), and, ifthe DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[0877] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1315 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 28 in thesequence of FIG. 62 (SEQ ID NO:104). The transmembrane domain has beententatively identified as extending from about amino acid position 140to about amino acid position 163 in the PRO1315 amino acid sequence(FIG. 62, SEQ ID NO:104).

[0878] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 29 to about 442, inclusive of FIG. 62 (SEQ ID NO:104), or (b)the complement of the DNA of (a).

[0879] Another embodiment is directed to fragments of a PRO1315polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 61 (SEQ ID NO:103).

[0880] In another embodiment, the invention provides isolated PRO1315polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0881] In a specific aspect, the invention provides isolated nativesequence PRO1315 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 29 to about 442 ofFIG. 62 (SEQ ID NO:104).

[0882] In another aspect, the invention concerns an isolated PRO1315polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 29 to about 442, inclusive of FIG. 62 (SEQ ID NO:104).

[0883] In a further aspect, the invention concerns an isolated PRO1315polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 29 to about 442, inclusive of FIG. 62 (SEQ ID NO:104).

[0884] In yet another aspect, the invention concerns an isolated PRO1315polypeptide, comprising the sequence of amino acid residues 1 or about29 to about 442, inclusive of FIG. 62 (SEQ ID NO:104), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1315antibody. Preferably, the PRO1315 fragment retains a qualitativebiological activity of a native PRO1315 polypeptide.

[0885] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1315 polypeptide havingthe sequence of amino acid residues from about 1 or about 29 to about442, inclusive of FIG. 62 (SEQ ID NO:104), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0886] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1315 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1315 antibody.

[0887] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1315 polypeptide bycontacting the native PRO1315 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0888] In a still further embodiment, the invention concerns acomposition comprising a PRO1315 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0889] 32. PRO1599

[0890] A cDNA clone (DNA62845-1684) has been identified that encodes anovel polypeptide having homology to Granzyme M and designated in thepresent application as “PRO1599.”

[0891] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1599 polypeptide.

[0892] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1599 polypeptide having the sequence of aminoacid residues from 1 or about 31 to about 283, inclusive of FIG. 64 (SEQID NO:111), or (b) the complement of the DNA molecule of (a).

[0893] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1599 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 159 andabout 917, inclusive, of FIG. 63 (SEQ ID NO:110). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0894] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203361 (DNA62845-1684), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203361 (DNA62845-1684).

[0895] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 31 to about 283, inclusive of FIG. 64(SEQ ID NO:111), or the complement of the DNA of (a).

[0896] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1599 polypeptide having the sequence of amino acid residues fromabout 31 to about 283, inclusive of FIG. 64 (SEQ ID NO:111), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0897] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1599 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 30 in the sequence of FIG.64 (SEQ ID NO:111).

[0898] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 31to about 283, inclusive of FIG. 64 (SEQ ID NO:111), or (b) thecomplement of the DNA of (a).

[0899] Another embodiment is directed to fragments of a PRO1599polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0900] In another embodiment, the invention provides isolated PRO1599polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0901] In a specific aspect, the invention provides isolated nativesequence PRO1599 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 31 to 283 of FIG. 64 (SEQ ID NO:111 ).

[0902] In another aspect, the invention concerns an isolated PRO1599polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues31 to about 283, inclusive of FIG. 64 (SEQ ID NO:111).

[0903] In a further aspect, the invention concerns an isolated PRO1599polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 31 to283 of FIG. 64 (SEQ ID NO:111).

[0904] In yet another aspect, the invention concerns an isolated PRO1599polypeptide, comprising the sequence of amino acid residues 31 to about283, inclusive of FIG. 64 (SEQ ID NO:111), or a fragment thereofsufficient to provide a binding site for an anti-PRO1599 antibody.Preferably, the PRO1599 fragment retains a qualitative biologicalactivity of a native PRO1599 polypeptide.

[0905] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1599 polypeptide havingthe sequence of amino acid residues from about 31 to about 283,inclusive of FIG. 64 (SEQ ID NO:111), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0906] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1599 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1599 antibody.

[0907] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1599 polypeptide, bycontacting the native PRO1599 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0908] In a still further embodiment, the invention concerns acomposition comprising a PRO1599 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0909]33. PRO1430

[0910] A cDNA clone (DNA64842-1632) has been identified that encodes anovel polypeptide having homology to reductase proteins, designated inthe present application as “PRO1430.”

[0911] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1430 polypeptide.

[0912] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1430 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 331, inclusive of FIG. 66 (SEQID NO:116), or (b) the complement of the DNA molecule of (a).

[0913] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1430 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 33 andabout 1074, inclusive, of FIG. 65 (SEQ ID NO:115). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0914] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203278 (DNA64842-1632), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203278 (DNA64842-1632).

[0915] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 18 to about 331, inclusive of FIG. 66(SEQ ID NO:116), or the complement of the DNA of (a).

[0916] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 and produced by hybridizing a test DNA molecule understringent conditions with (a) a DNA molecule encoding a PRO1430polypeptide having the sequence of amino acid residues from about 18 toabout 331, inclusive of FIG. 66 (SEQ ID NO:116), or (b) the complementof the DNA molecule of (a), and, if the DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b),isolating the test DNA molecule.

[0917] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1430 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 17 in the sequence of FIG. 66 (SEQ ID NO:116).

[0918] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 18to about 331, inclusive of FIG. 66 (SEQ ID NO:116), or (b) thecomplement of the DNA of (a).

[0919] Another embodiment is directed to fragments of a PRO1430polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0920] In another embodiment, the invention provides isolated PRO1430polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0921] In a specific aspect, the invention provides isolated nativesequence PRO1430 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 18 to 331 of FIG. 66 (SEQ ID NO:116).

[0922] In another aspect, the invention concerns an isolated PRO1430polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues18 to about 331, inclusive of FIG. 66 (SEQ ID NO:116).

[0923] In a further aspect, the invention concerns an isolated PRO1430polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 18 to331 of FIG. 66 (SEQ ID NO:116).

[0924] In yet another aspect, the invention concerns an isolated PRO1430polypeptide, comprising the sequence of amino acid residues 18 to about331, inclusive of FIG. 66 (SEQ ID NO:116), or a fragment thereofsufficient to provide a binding site for an anti-PRO1430 antibody.Preferably, the PRO1430 fragment retains a qualitative biologicalactivity of a native PRO1430 polypeptide.

[0925] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1430 polypeptide havingthe sequence of amino acid residues from about 18 to about 331,inclusive of FIG. 66 (SEQ ID NO:1 16), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0926] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1430 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1430 antibody.

[0927] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1430 polypeptide, bycontacting the native PRO1430 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0928] In a still further embodiment, the invention concerns acomposition comprising a PRO1430 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0929] 34. PRO1374

[0930] A cDNA clone (DNA64849-1604) has been identified that encodes anovel polypeptide having sequence identity with P4HA and designated inthe present application as “PRO1374.”

[0931] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1374 polypeptide.

[0932] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1374 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 544, inclusive of FIG. 68 (SEQID NO:118), or (b) the complement of the DNA molecule of (a).

[0933] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1374 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 78 andabout 1652, inclusive, of FIG. 67 (SEQ ID NO:117). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0934] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203468 (DNA64849-1604), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203468 (DNA64849-1604).

[0935] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 20 to about 544, inclusive of FIG. 68(SEQ ID NO: 118), or the complement of the DNA of (a).

[0936] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1374 polypeptide having the sequence of amino acid residues fromabout 20 to about 544, inclusive of FIG. 68 (SEQ ID NO: 118), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0937] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 20to about 544, inclusive of FIG. 68 (SEQ ID NO: 118), or (b) thecomplement of the DNA of (a).

[0938] Another embodiment is directed to fragments of a PRO1374polypeptide coding sequence that may fund use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0939] In another embodiment, the invention provides isolated PRO1374polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0940] In a specific aspect, the invention provides isolated nativesequence PRO1374 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 20 through 544 of FIG. 68 (SEQ ID NO:118).

[0941] In another aspect, the invention concerns an isolated PRO1374polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues20 to about 544, inclusive of FIG. 68 (SEQ ID NO: 118).

[0942] In a further aspect, the invention concerns an isolated PRO1374polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 20through 544 of FIG. 68 (SEQ ID NO: 118).

[0943] In yet another aspect, the invention concerns an isolated PRO1374polypeptide, comprising the sequence of amino acid residues 20 to about544, inclusive of FIG. 68 (SEQ ID NO: 118), or a fragment thereofsufficient to provide a binding site for an anti-PRO1374 antibody.Preferably, the PRO1374 fragment retains a qualitative biologicalactivity of a native PRO1374 polypeptide.

[0944] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1374 polypeptide havingthe sequence of amino acid residues from about 20 to about 544,inclusive of FIG. 68 (SEQ ID NO:118), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0945] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1374 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1374 antibody.

[0946] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1374 polypeptide, bycontacting the native PRO1374 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0947] In a still further embodiment, the invention concerns acomposition comprising a PRO1374 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0948] 35. PRO1311

[0949] A cDNA clone (DNA64863-1573) has been identified that encodes anovel tetraspan polypeptide designated in the present application as“PRO1311”.

[0950] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1311 polypeptide.

[0951] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1311 polypeptide having the sequence of aminoacid residues from 1 or about 45 to about 294, inclusive of FIG. 70 (SEQID NO: 123), or (b) the complement of the DNA molecule of (a).

[0952] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1311 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 327 andabout 1076, inclusive, of FIG. 69 (SEQ ID NO: 122). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0953] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203251 (DNA64863-1573), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203251 (DNA64863-1573).

[0954] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 45 to about 294, inclusive of FIG. 70(SEQ ID NO: 123), or the complement of the DNA of (a).

[0955] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1311 polypeptide having the sequence of amino acid residues fromabout 45 to about 294, inclusive of FIG. 70 (SEQ ID NO: 123), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0956] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1311 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domains deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 44 in thesequence of FIG. 70 (SEQ ID NO: 123). Four transmembrane domains hasbeen tentatively identified as extending from about amino acid 22-42,57-85, 94-116, and 230-257 in the PRO1311 amino acid sequence (FIG. 70,SEQ ID NO: 123).

[0957] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 45to about 294, inclusive of FIG. 70 (SEQ ID NO: 123), or (b) thecomplement of the DNA of (a).

[0958] Another embodiment is directed to fragments of a PRO1311polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0959] In another embodiment, the invention provides isolated PRO1311polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0960] In a specific aspect, the invention provides isolated nativesequence PRO1311 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 45 to 294 of FIG. 70 (SEQ ID NO: 123).

[0961] In another aspect, the invention concerns an isolated PRO1311polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues45 to about 294, inclusive of FIG. 70 (SEQ ID NO: 123).

[0962] In a further aspect, the invention concerns an isolated PRO1311polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 45 to294 of FIG. 70 (SEQ ID NO: 123).

[0963] In yet another aspect, the invention concerns an isolated PRO1311polypeptide, comprising the sequence of amino acid residues 45 to about294, inclusive of FIG. 70 (SEQ ID NO: 123), or a fragment thereofsufficient to provide a binding site for an anti-PRO1311 antibody.Preferably, the PRO1311 fragment retains a qualitative biologicalactivity of a native PRO1311 polypeptide.

[0964] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1311 polypeptide havingthe sequence of amino acid residues from about 45 to about 294,inclusive of FIG. 70 (SEQ ID NO: 123), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[0965] 36. PRO1357

[0966] A cDNA clone (DNA64881-1602) has been identified, having homologyto nucleic acid encoding the von Ebner minor salivary gland protein thatencodes a novel polypeptide, designated in the present application as“PRO1357”.

[0967] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1357 polypeptide.

[0968] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1357 polypeptide having the sequence of aminoacid residues from about 1 or about 22 to about 484, inclusive of FIG.72 (SEQ ID NO: 128), or (b) the complement of the DNA molecule of (a).

[0969] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1357 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 74 orabout 137 and about 1525, inclusive, of FIG. 71 (SEQ ID NO: 127).Preferably, hybridization occurs under stringent hybridization and washconditions.

[0970] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203240 (DNA64881-1602) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203240 (DNA64881-1602).

[0971] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 22 to about 484, inclusive of FIG. 72(SEQ ID NO: 128), or (b) the complement of the DNA of (a).

[0972] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 40 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1357 polypeptide having the sequence of amino acidresidues from 1 or about 22 to about 484, inclusive of FIG. 72 (SEQ IDNO: 128), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[0973] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1357 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 21 in the sequence of FIG.72 (SEQ ID NO:128).

[0974] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 22 to about 484, inclusive of FIG. 72 (SEQ ID NO:128), or (b)the complement of the DNA of (a).

[0975] Another embodiment is directed to fragments of a PRO1357polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 71 (SEQ ID NO:127).

[0976] In another embodiment, the invention provides isolated PRO1357polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[0977] In a specific aspect, the invention provides isolated nativesequence PRO1357 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 22 to about 484 ofFIG. 72 (SEQ ID NO:128).

[0978] In another aspect, the invention concerns an isolated PRO1357polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 22 to about 484, inclusive of FIG. 72 (SEQ ID NO:128).

[0979] In a further aspect, the invention concerns an isolated PRO1357polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 22 to about 484, inclusive of FIG. 72 (SEQ ID NO:128).

[0980] In yet another aspect, the invention concerns an isolated PRO1357polypeptide, comprising the sequence of amino acid residues 1 or about22 to about 484, inclusive of FIG. 72 (SEQ ID NO:128), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1357antibody. Preferably, the PRO1357 fragment retains a qualitativebiological activity of a native PRO1357 polypeptide.

[0981] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1357 polypeptide havingthe sequence of amino acid residues from about 1 or about 22 to about484, inclusive of FIG. 72 (SEQ ID NO:128), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[0982] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1357 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1357 antibody.

[0983] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1357 polypeptide bycontacting the native PRO1357 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[0984] In a still further embodiment, the invention concerns acomposition comprising a PRO1357 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[0985] 37. PRO1244

[0986] A cDNA clone (DNA64883-1526) has been identified that encodes anovel polypeptide having homology to Implantation-Associated Protein anddesignated in the present application as “PRO1244.”

[0987] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1244 polypeptide.

[0988] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1244 polypeptide having the sequence of aminoacid residues from 1 or about 30 to about 335, inclusive of FIG. 74 (SEQID NO:130), or (b) the complement of the DNA molecule of (a).

[0989] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1244 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 96 andabout 1013, inclusive, of FIG. 73 (SEQ ID NO:129). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[0990] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203253 (DNA64883-1526), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203253 (DNA64883-1526).

[0991] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 30 to about 335, inclusive of FIG. 74(SEQ ID NO: 130), or the complement of the DNA of (a).

[0992] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1244 polypeptide having the sequence of amino acid residues fromabout 30 to about 335, inclusive of FIG. 74 (SEQ ID NO: 130), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[0993] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1244 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domains deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 29 in thesequence of FIG. 74 (SEQ ID NO: 130). The transmembrane domains havebeen tentatively identified in the PRO1244 amino acid sequence at aboutthe following amino acid regions: 183-205, 217-137, 271-287, and301-321.

[0994] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 30to about 335, inclusive of FIG. 74 (SEQ ID NO: 130), or (b) thecomplement of the DNA of (a).

[0995] Another embodiment is directed to fragments of a PRO1244polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[0996] In another embodiment, the invention provides isolated PRO1244polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[0997] In a specific aspect, the invention provides isolated nativesequence PRO1244 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 30 to 335 of FIG. 74 (SEQ ID NO: 130).

[0998] In another aspect, the invention concerns an isolated PRO1244polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues30 to about 335, inclusive of FIG. 74 (SEQ ID NO: 130).

[0999] In a further aspect, the invention concerns an isolated PRO1244polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 30 to335 of FIG. 74 (SEQ ID NO: 130).

[1000] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1244 polypeptide havingthe sequence of amino acid residues from about 30 to about 335,inclusive of FIG. 74 (SEQ ID NO: 130), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1001] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1244 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1244 antibody.

[1002] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1244 polypeptide, bycontacting the native PRO1244 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1003] In a still further embodiment, the invention concerns acomposition comprising a PRO1244 polypeptide, or an agonst or antagonistas hereinabove defined, in combination with a pharmaceuticallyacceptable carrier.

[1004] 38. PRO1246

[1005] A cDNA clone (DNA64885-1529) has been identified, having homologyto nucleic acid encoding bone-related sulphatase that encodes a novelpolypeptide, designated in the present application as “PRO1246”.

[1006] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1246 polypeptide.

[1007] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1246 polypeptide having the sequence of aminoacid residues from about 1 or about 16 to about 536, inclusive of FIG.76 (SEQ ID NO: 132), or (b) the complement of the DNA molecule of (a).

[1008] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1246 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 119 orabout 164 and about 1726, inclusive, of FIG. 75 (SEQ ID NO: 131).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1009] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203457 (DNA64885-1529) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203457 (DNA64885-1529).

[1010] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 16 to about 536, inclusive of FIG. 76(SEQ ID NO: 132), or (b) the complement of the DNA of (a).

[1011] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1246 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 536, inclusive of FIG. 76 (SEQID NO: 132), or (b) the complement of the DNA molecule of (a), and, ifthe DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1012] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1246 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1to about amino acid position 16 in the sequence of FIG.76 (SEQ ID NO: 132).

[1013] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 16 to about 536, inclusive of FIG. 76 (SEQ ID NO: 132), or (b)the complement of the DNA of (a).

[1014] Another embodiment is directed to fragments of a PRO1246polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 75 (SEQ ID NO: 131).

[1015] In another embodiment, the invention provides isolated PRO1246polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1016] In a specific aspect, the invention provides isolated nativesequence PRO1246 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 16 to about 536 ofFIG. 76 (SEQ ID NO: 132).

[1017] In another aspect, the invention concerns an isolated PRO1246polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 16 to about 536, inclusive of FIG. 76 (SEQ ID NO: 132).

[1018] In a further aspect, the invention concerns an isolated PRO1246polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 16 to about 536, inclusive of FIG. 76 (SEQ ID NO: 132).

[1019] In yet another aspect, the invention concerns an isolated PRO1246polypeptide, comprising the sequence of amino acid residues 1 or about16 to about 536, inclusive of FIG. 76 (SEQ ID NO: 132), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1246antibody. Preferably, the PRO1246 fragment retains a qualitativebiological activity of a native PRO1246 polypeptide.

[1020] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1246 polypeptide havingthe sequence of amino acid residues from about 1 or about 16 to about536, inclusive of FIG. 76 (SEQ ID NO: 132), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1021] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1246 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1246 antibody.

[1022] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1246 polypeptide bycontacting the native PRO1246 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1023] In a still further embodiment, the invention concerns acomposition comprising a PRO1246 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1024] 39. PRO1356

[1025] A cDNA clone (DNA64886-1601) has been identified, having homologyto nucleic acid encoding clostridium perfringens enterotoxin receptor,that encodes a novel polypeptide, designated in the present applicationas “PRO1356”.

[1026] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1356 polypeptide.

[1027] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1356 polypeptide having the sequence of aminoacid residues from about 1 or about 25 to about 230, inclusive of FIG.78 (SEQ ID NO: 134), or (b) the complement of the DNA molecule of (a).

[1028] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1356 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 122 orabout 194 and about 811, inclusive, of FIG. 77 (SEQ ID NO: 133).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1029] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203241 (DNA64886-1601) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203241 (DNA64886-1601).

[1030] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 25 to about 230, inclusive of FIG. 78(SEQ ID NO: 134), or (b) the complement of the DNA of (a).

[1031] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 20 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1356 polypeptide having the sequence of amino acidresidues from 1 or about 25 to about 230, inclusive of FIG. 78 (SEQ IDNO: 134), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[1032] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1356 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 24 in thesequence of FIG. 78 (SEQ ID NO: 134). The transmembrane domains havebeen tentatively identified as extending from about amino acid position82 to about amino acid position 102, from about amino acid position 117to about amino acid position 140 and from about amino acid position 163to about amino acid position 182 in the PRO1356 amino acid sequence(FIG. 78, SEQ ID NO: 134).

[1033] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 25 to about 230, inclusive of FIG. 78 (SEQ ID NO: 134), or (b)the complement of the DNA of (a).

[1034] Another embodiment is directed to fragments of a PRO1356polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 77 (SEQ ID NO: 133).

[1035] In another embodiment, the invention provides isolated PRO1356polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1036] In a specific aspect, the invention provides isolated nativesequence PRO1356 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 25 to about 230 ofFIG. 78 (SEQ ID NO: 134).

[1037] In another aspect, the invention concerns an isolated PRO1356polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 25 to about 230, inclusive of FIG. 78 (SEQ ID NO: 134).

[1038] In a further aspect, the invention concerns an isolated PRO1356polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 25 to about 230, inclusive of FIG. 78 (SEQ ID NO: 134).

[1039] In yet another aspect, the invention concerns an isolated PRO1356polypeptide, comprising the sequence of amino acid residues 1 or about25 to about 230, inclusive of FIG. 78 (SEQ ID NO: 134), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1356antibody. Preferably, the PRO1356 fragment retains a qualitativebiological activity of a native PRO1356 polypeptide.

[1040] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1356 polypeptide havingthe sequence of amino acid residues from about 1 or about 25 to about230, inclusive of FIG. 78 (SEQ ID NO: 134), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1041] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1356 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1356 antibody.

[1042] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1356 polypeptide bycontacting the native PRO1356 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1043] In a still further embodiment, the invention concerns acomposition comprising a PRO1356 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1044] 40. PRO1275

[1045] A cDNA clone (DNA64888-1542) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1275.”

[1046] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1275 polypeptide.

[1047] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1275 polypeptide having the sequence of aminoacid residues from about 26 to about 119, inclusive of FIG. 80 (SEQ IDNO: 136), or (b) the complement of the DNA molecule of (a).

[1048] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1275 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 112 andabout 393, inclusive, of FIG. 79 (SEQ ID NO: 135). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1049] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203249 (DNA64888-1542), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203249 (DNA64888-1542).

[1050] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 26 to about 119, inclusive of FIG. 80(SEQ ID NO: 136), or the complement of the DNA of (a).

[1051] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1275 polypeptide having the sequence of amino acid residues fromabout 26 to about 119, inclusive of FIG. 80 (SEQ ID NO: 136), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1052] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 26to about 119, inclusive of FIG. 80 (SEQ ID NO: 136), or (b) thecomplement of the DNA of (a).

[1053] Another embodiment is directed to fragments of a PRO1275polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1054] In another embodiment, the invention provides isolated PRO1275polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1055] In a specific aspect, the invention provides isolated nativesequence PRO1275 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 26 through 119 of FIG. 80 (SEQ ID NO:136).

[1056] In another aspect, the invention concerns an isolated PRO1275polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues26 to about 119, inclusive of FIG. 80 (SEQ ID NO: 136).

[1057] In a further aspect, the invention concerns an isolated PRO1275polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 26through 119 of FIG. 80 (SEQ ID NO: 136).

[1058] In yet another aspect, the invention concerns an isolated PRO1275polypeptide, comprising the sequence of amino acid residues 26 to about119, inclusive of FIG. 80 (SEQ ID NO: 136), or a fragment thereofsufficient to provide a binding site for an anti-PRO1275 antibody.Preferably, the PRO1275 fragment retains a qualitative biologicalactivity of a native PRO1275 polypeptide.

[1059] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1275 polypeptide havingthe sequence of amino acid residues from about 26 to about 119,inclusive of FIG. 80 (SEQ ID NO: 136), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1060] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1275 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1275 antibody.

[1061] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1275 polypeptide, bycontacting the native PRO1275 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1062] In a still further embodiment, the invention concerns acomposition comprising a PRO1275 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1063] 41. PRO1274

[1064] A cDNA clone (DNA64889-1541) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1274.”

[1065] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1274 polypeptide.

[1066] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1274 polypeptide having the sequence of aminoacid residues from 1 or about 25 to about 110, inclusive of FIG. 82 (SEQID NO: 138), or (b) the complement of the DNA molecule of (a).

[1067] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1274 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 96 andabout 353, inclusive, of FIG. 81 (SEQ ID NO: 137). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1068] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203250 (DNA64889-1541), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203250 (DNA64889-1541).

[1069] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 25 to about 110, inclusive of FIG. 82(SEQ ID NO: 138), or the complement of the DNA of (a).

[1070] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1274 polypeptide having the sequence of amino acid residues fromabout 25 to about 110, inclusive of FIG. 82 (SEQ ID NO: 138), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1071] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 25to about 110, inclusive of FIG. 82 (SEQ ID NO: 138), or (b) thecomplement of the DNA of (a).

[1072] Another embodiment is directed to fragments of a PRO1274polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1073] In another embodiment, the invention provides isolated PRO1274polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1074] In a specific aspect, the invention provides isolated nativesequence PRO1274 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 25 through 110 of FIG. 82 (SEQ ID NO:138).

[1075] In another aspect, the invention concerns an isolated PRO1274polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues25 to about 110, inclusive of FIG. 82 (SEQ ID NO: 138).

[1076] In a further aspect, the invention concerns an isolated PRO1274polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 25through 110 of FIG. 82 (SEQ ID NO: 138).

[1077] In yet another aspect, the invention concerns an isolatedPRO1274polypeptide, comprising the sequence of amino acid residues 25 toabout 110, inclusive of FIG. 82 (SEQ ID NO: 138), or a fragment thereofsufficient to provide a binding site for an anti-PRO1274 antibody.Preferably, the PRO1274 fragment retains a qualitative biologicalactivity of a native PRO1274 polypeptide.

[1078] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1274 polypeptide havingthe sequence of amino acid residues from about 25 to about 110,inclusive of FIG. 82 (SEQ ID NO: 138), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1079] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1274 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1274 antibody.

[1080] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1274 polypeptide, bycontacting the native PRO1274 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1081] In a still further embodiment, the invention concerns acomposition comprising a PRO1274 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1082] 42. PRO1412

[1083] A cDNA clone (DNA64897-1628) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1412.”

[1084] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1412 polypeptide.

[1085] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1412 polypeptide having the sequence of aminoacid residues from 1 or about 29 to about 311, inclusive of FIG. 84 (SEQID NO: 140), or (b) the complement of the DNA molecule of (a).

[1086] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1412 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 226 andabout 1074, inclusive, of FIG. 83 (SEQ ID NO: 139). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1087] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203216 (DNA64897-1628), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203216 (DNA64897-1628).

[1088] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 29 to about 311, inclusive of FIG. 84(SEQ ID NO: 140), or the complement of the DNA of (a).

[1089] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1412 polypeptide having the sequence of amino acid residues fromabout 29 to about 311, inclusive of FIG. 84 (SEQ ID NO: 140), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1090] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1412 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 28 in thesequence of FIG. 84 (SEQ ID NO: 140). The transmembrane domain has beententatively identified as extending from about amino acid position 190through about amino acid position 216 in the PRO1412 amino acid sequence(FIG. 84, SEQ ID NO: 140).

[1091] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 29to about 311, inclusive of FIG. 84 (SEQ ID NO: 140), or (b) thecomplement of the DNA of (a).

[1092] Another embodiment is directed to fragments of a PRO1412polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1093] In another embodiment, the invention provides isolated PRO1412polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1094] In a specific aspect, the invention provides isolated nativesequence PRO1412 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 29 to 311 of FIG. 84 (SEQ ID NO: 140).

[1095] In another aspect, the invention concerns an isolated PRO1412polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues29 to about 311, inclusive of FIG. 84 (SEQ ID NO: 140).

[1096] In a further aspect, the invention concerns an isolated PRO1412polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 29 to311 of FIG. 84 (SEQ ID NO: 140).

[1097] In yet another aspect, the invention concerns an isolated PRO1412polypeptide, comprising the sequence of amino acid residues 29 to about311, inclusive of FIG. 84 (SEQ ID NO: 140), or a fragment thereofsufficient to provide a binding site for an anti-PRO1412 antibody.Preferably, the PRO1412 fragment retains a qualitative biologicalactivity of a native PRO1412 polypeptide.

[1098] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1412 polypeptide havingthe sequence of amino acid residues from about 29 to about 311,inclusive of FIG. 84 (SEQ ID NO: 140), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1099] 43. PRO1557

[1100] A cDNA clone (DNA64902-1667) has been identified that encodes anovel polypeptide having homology to chordin and designated in thepresent application as “PRO1557”.

[1101] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1557 polypeptide.

[1102] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1557 polypeptide having the sequence of aminoacid residues from 1 or about 26 to about 451, inclusive of FIG. 86 (SEQID NO: 142), or (b) the complement of the DNA molecule of (a).

[1103] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1557 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 362 andabout 1639, inclusive, of FIG. 85 (SEQ ID NO: 141). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1104] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203317 (DNA64902-1667), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203317 (DNA64902-1667).

[1105] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 26 to about 451, inclusive of FIG. 86(SEQ ID NO: 142), or the complement of the DNA of (a).

[1106] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1557 polypeptide having the sequence of amino acid residues fromabout 26 to about 451, inclusive of FIG. 86 (SEQ ID NO: 142), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1107] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1557 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 25 in the sequence of FIG. 86 (SEQ ID NO: 142).

[1108] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 26to about 451, inclusive of FIG. 86 (SEQ ID NO: 142), or (b) thecomplement of the DNA of (a).

[1109] Another embodiment is directed to fragments of a PRO1557polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1110] In another embodiment, the invention provides isolated PRO1557polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1111] In a specific aspect, the invention provides isolated nativesequence PRO1557 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 26 to 451 of FIG. 86 (SEQ ID NO: 142).

[1112] In another aspect, the invention concerns an isolated PRO1557polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues26 to about 451, inclusive of FIG. 86 (SEQ ID NO: 142).

[1113] In a further aspect, the invention concerns an isolated PRO1557polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 26 to451 of FIG. 86 (SEQ ID NO: 142).

[1114] In yet another aspect, the invention concerns an isolated PRO1557polypeptide, comprising the sequence of amino acid residues 26 to about451, inclusive of FIG. 86 (SEQ ID NO: 142), or a fragment thereofsufficient to provide a binding site for an anti-PRO1557 antibody.Preferably, the PRO1557 fragment retains a qualitative biologicalactivity of a native PRO1557 polypeptide.

[1115] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1557 polypeptide havingthe sequence of amino acid residues from about 26 to about 451,inclusive of FIG. 86 (SEQ ID NO: 142), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1116] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1557 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1557 antibody.

[1117] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1557 polypeptide bycontacting the native PRO1557 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1118] In a still further embodiment, the invention concerns acomposition comprising a PRO1557 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1119] 44. PRO1286

[1120] A cDNA clone (DNA64903-1553) has been identified that encodes anovel secreted polypeptide that is designated in the present applicationas “PRO1286.”

[1121] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1286 polypeptide.

[1122] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1286 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 93, inclusive of FIG. 88 (SEQID NO: 144), or (b) the complement of the DNA molecule of (a).

[1123] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1286 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 147 andabout 371, inclusive, of FIG. 87 (SEQ ID NO: 143). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1124] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203223 (DNA64903-1553), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203223 (DNA64903-1553).

[1125] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 93, inclusive of FIG. 88 (SEQID NO: 144), or the complement of the DNA of (a).

[1126] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1286 polypeptide having the sequence of amino acid residues fromabout 19 to about 93, inclusive of FIG. 88 (SEQ ID NO: 144), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1127] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1286 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 18 in the sequence of FIG.88 (SEQ ID NO: 144).

[1128] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 93, inclusive of FIG. 88 (SEQ ID NO: 144), or (b) thecomplement of the DNA of (a).

[1129] Another embodiment is directed to fragments of a PRO1286polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1130] In another embodiment, the invention provides isolated PRO1286polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1131] In a specific aspect, the invention provides isolated nativesequence PRO1286 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 to 93 of FIG. 88 (SEQ ID NO: 144).

[1132] In another aspect, the invention concerns an isolated PRO1286polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 93, inclusive of FIG. 88 (SEQ ID NO: 144).

[1133] In a further aspect, the invention concerns an isolated PRO1286polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19 to93 of FIG. 88 (SEQ ID NO: 144).

[1134] In yet another aspect, the invention concerns an isolated PRO1286polypeptide, comprising the sequence of amino acid residues 19 to about93, inclusive of FIG. 88 (SEQ ID NO: 144), or a fragment thereofsufficient to provide a binding site for an anti-PRO1286 antibody.Preferably, the PRO1286 fragment retains a qualitative biologicalactivity of a native PRO1286 polypeptide.

[1135] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1286 polypeptide havingthe sequence of amino acid residues from about 19 to about 93, inclusiveof FIG. 88 (SEQ ID NO: 144), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1136] 45. PRO1294

[1137] A cDNA clone (DNA64905-1558) has been identified, having homologyto nucleic acid encoding olfactomedin, that encodes a novel polypeptide,designated in the present application as “PRO1294”.

[1138] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1294 polypeptide.

[1139] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1294 polypeptide having the sequence of aminoacid residues from about 1 or about 22 to about 406, inclusive of FIG.90 (SEQ ID NO: 146), or (b) the complement of the DNA molecule of (a).

[1140] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1294 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 110 orabout 173 and about 1327, inclusive, of FIG. 89 (SEQ ID NO: 145).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1141] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203233 (DNA64905-1558) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203233 (DNA64905-1558).

[1142] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 22 to about 406, inclusive of FIG. 90(SEQ ID NO: 146), or (b) the complement of the DNA of (a).

[1143] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1294 polypeptide having the sequence of amino acidresidues from 1 or about 22 to about 406, inclusive of FIG. 90 (SEQ IDNO: 146), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[1144] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1294 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 21 in the sequence of FIG.90 (SEQ ID NO: 146).

[1145] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 22 to about 406, inclusive of FIG. 90 (SEQ ID NO: 146), or (b)the complement of the DNA of (a).

[1146] Another embodiment is directed to fragments of a PRO1294polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 89 (SEQ ID NO: 145).

[1147] In another embodiment, the invention provides isolated PRO1294polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1148] In a specific aspect, the invention provides isolated nativesequence PRO1294 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 22 to about 406 ofFIG. 90 (SEQ ID NO: 146).

[1149] In another aspect, the invention concerns an isolated PRO1294polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 22 to about 406, inclusive of FIG. 90 (SEQ ID NO: 146).

[1150] In a further aspect, the invention concerns an isolated PRO1294polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 22 to about 406, inclusive of FIG. 90 (SEQ ID NO: 146).

[1151] In yet another aspect, the invention concerns an isolated PRO1294polypeptide, comprising the sequence of amino acid residues 1 or about22 to about 406, inclusive of FIG. 90 (SEQ ID NO: 146), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1294antibody. Preferably, the PRO1294 fragment retains a qualitativebiological activity of a native PRO1294 polypeptide.

[1152] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1294 polypeptide havingthe sequence of amino acid residues from about 1 or about 22 to about406, inclusive of FIG. 90 (SEQ ID NO: 146), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1153] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1294 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1294 antibody.

[1154] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1294 polypeptide bycontacting the native PRO1294 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1155] In a still further embodiment, the invention concerns acomposition comprising a PRO1294 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1156] 46. PRO1347

[1157] A cDNA clone (DNA64950-1590) has been identified that encodes anovel polypeptide having sequence identity with butyrophilin anddesignated in the present application as “PRO1347.”

[1158] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1347 polypeptide.

[1159] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1347 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 500, inclusive of FIG. 92 (SEQID NO: 148), or (b) the complement of the DNA molecule of (a).

[1160] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1347 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 234 andabout 1682, inclusive, of FIG. 91 (SEQ ID NO: 147). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1161] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203224 (DNA64950-1590), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203224 (DNA64950-1590).

[1162] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 18 to about 500, inclusive of FIG. 92(SEQ ID NO: 148), or the complement of the DNA of (a).

[1163] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1347 polypeptide having the sequence of amino acid residues fromabout 18 to about 500, inclusive of FIG. 92 (SEQ ID NO: 148), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1164] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1347 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted (or that terminustruncated) or inactivated variants, or is complementary to such encodingnucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 17 in the sequence of FIG. 92 (SEQ ID NO: 148). Thetransmembrane domain has been tentatively identified as extending fromabout amino acid position 239 through about amino acid position 255 inthe PRO1347 amino acid sequence (FIG. 92, SEQ ID NO: 148).

[1165] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 18to about 500, inclusive of FIG. 92 (SEQ ID NO: 148), or (b) thecomplement of the DNA of (a).

[1166] Another embodiment is directed to fragments of a PRO1347polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1167] In another embodiment, the invention provides isolated PRO1347polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1168] In a specific aspect, the invention provides isolated nativesequence PRO1347 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 18 through 500 of FIG. 92 (SEQ ID NO:148).

[1169] In another aspect, the invention concerns an isolated PRO1347polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues18 to about 500, inclusive of FIG. 92 (SEQ ID NO: 148).

[1170] In a further aspect, the invention concerns an isolated PRO1347polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 18through 500 of FIG. 92 (SEQ ID NO: 148).

[1171] In yet another aspect, the invention concerns an isolated PRO1347polypeptide, comprising the sequence of amino acid residues 18 to about500, inclusive of FIG. 92 (SEQ ID NO: 148), or a fragment thereofsufficient to provide a binding site for an anti-PRO1347 antibody.Preferably, the PRO1347 fragment retains a qualitative biologicalactivity of a native PRO1347 polypeptide.

[1172] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1347 polypeptide havingthe sequence of amino acid residues from about 18 to about 500,inclusive of FIG. 92 (SEQ ID NO: 148), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1173] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1347 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1347 antibody.

[1174] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1347 polypeptide, bycontacting the native PRO1347 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1175] In a still further embodiment, the invention concerns acomposition comprising a PRO1347 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1176] 47. PRO1305

[1177] A cDNA clone (DNA64952-1568) has been identified that encodes anovel secreted polypeptide, designated in the present application as“PRO1305”.

[1178] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1305 polypeptide.

[1179] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1305 polypeptide having the sequence of aminoacid residues from about 1 or about 26 to about 258, inclusive of FIG.94 (SEQ ID NO: 153), or (b) the complement of the DNA molecule of (a).

[1180] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1305 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 126 orabout 201 and about 899, inclusive, of FIG. 93 (SEQ ID NO: 152).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1181] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203222 (DNA64952-1568) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203222 (DNA64952-1568).

[1182] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 26 to about 258, inclusive of FIG. 94(SEQ ID NO: 153), or (b) the complement of the DNA of (a).

[1183] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1305 polypeptide having the sequence of amino acidresidues from 1 or about 26 to about 258, inclusive of FIG. 94 (SEQ IDNO: 153), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[1184] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1305 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 25 in the sequence of FIG.94 (SEQ ID NO: 153).

[1185] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 26 to about 258, inclusive of FIG. 94 (SEQ ID NO: 153), or (b)the complement of the DNA of (a).

[1186] Another embodiment is directed to fragments of a PRO1305polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 93 (SEQ ID NO: 152).

[1187] In another embodiment, the invention provides isolated PRO1305polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1188] In a specific aspect, the invention provides isolated nativesequence PRO1305 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 26 to about 258 ofFIG. 94 (SEQ ID NO: 153).

[1189] In another aspect, the invention concerns an isolated PRO1305polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 26 to about 258, inclusive of FIG. 94 (SEQ ID NO: 153).

[1190] In a further aspect, the invention concerns an isolated PRO1305polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 26 to about 258, inclusive of FIG. 94 (SEQ ID NO: 153).

[1191] In yet another aspect, the invention concerns an isolated PRO1305polypeptide, comprising the sequence of amino acid residues 1 or about26 to about 258, inclusive of FIG. 94 (SEQ ID NO: 153), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1305antibody. Preferably, the PRO1305 fragment retains a qualitativebiological activity of a native PRO1305 polypeptide.

[1192] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1305 polypeptide havingthe sequence of amino acid residues from about 1 or about 26 to about258, inclusive of FIG. 94 (SEQ ID NO: 153), or (b) the complement of theDNA molecule of (a), and if the test DNA molecule has at least about an80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1193] 48. PRO1273

[1194] A cDNA clone (DNA65402-1540) has been identified that encodes anovel polypeptide having sequence identity with lipocalins anddesignated in the present application as “PRO1273.”

[1195] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1273 polypeptide.

[1196] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1273 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 163, inclusive of FIG. 96 (SEQID NO: 158), or (b) the complement of the DNA molecule of (a).

[1197] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1273 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 86 andabout 514, inclusive, of FIG. 95 (SEQ ID NO: 157). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1198] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203252 (DNA65402-1540), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203252 (DNA65402-1540).

[1199] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 21 to about 163, inclusive of FIG. 96(SEQ ID NO: 158), or the complement of the DNA of (a).

[1200] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1273 polypeptide having the sequence of amino acid residues fromabout 21 to about 163, inclusive of FIG. 96 (SEQ ID NO: 158), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1201] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 21to about 163, inclusive of FIG. 96 (SEQ ID NO: 158), or (b) thecomplement of the DNA of (a).

[1202] Another embodiment is directed to fragments of a PRO1273polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1203] In another embodiment, the invention provides isolated PRO1273polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1204] In a specific aspect, the invention provides isolated nativesequence PRO1273 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 21 through 163 of FIG. 96 (SEQ ID NO:158).

[1205] In another aspect, the invention concerns an isolated PRO1273polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues21 to about 163, inclusive of FIG. 96 (SEQ ID NO: 158).

[1206] In a further aspect, the invention concerns an isolated PRO1273polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 21through 163 of FIG. 96 (SEQ ID NO: 158).

[1207] In yet another aspect, the invention concerns an isolated PRO1273polypeptide, comprising the sequence of amino acid residues 21 to about163, inclusive of FIG. 96 (SEQ ID NO: 158), or a fragment thereofsufficient to provide a binding site for an anti-PRO1273 antibody.Preferably, the PRO1273 fragment retains a qualitative biologicalactivity of a native PRO1273 polypeptide.

[1208] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1273 polypeptide havingthe sequence of amino acid residues from about 21 to about 163,inclusive of FIG. 96 (SEQ ID NO: 158), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1209] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1273 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1273 antibody.

[1210] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1273 polypeptide, bycontacting the native PRO1273 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1211] In a still further embodiment, the invention concerns acomposition comprising a PRO1273 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1212] 49. PRO1302

[1213] A cDNA clone (DNA65403-1565) has been identified that encodes anovel polypeptide having sequence identity with CD33 and designated inthe present application as “PRO1302.”

[1214] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1302 polypeptide.

[1215] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1302 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 463, inclusive of FIG. 98 (SEQID NO: 160), or (b) the complement of the DNA molecule of (a).

[1216] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1302 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 88 andabout 1431, inclusive, of FIG. 97 (SEQ ID NO: 159). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1217] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203230 (DNA65403-1565), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203230 (DNA65403-1565).

[1218] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 16 to about 463, inclusive of FIG. 98(SEQ ID NO: 160), or the complement of the DNA of (a).

[1219] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1302 polypeptide having the sequence of amino acid residues fromabout 16 to about 463, inclusive of FIG. 98 (SEQ ID NO: 160), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1220] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1302 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted (or truncated form)or inactivated variants, or is complementary to such encoding nucleicacid molecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position15 in the sequence of FIG. 98 (SEQ ID NO: 160). The transmembrane domainhas been tentatively identified as extending from about amino acidposition 351 through about amino acid position 370 in the PRO1302 aminoacid sequence (FIG. 98, SEQ ID NO: 160).

[1221] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 16to about 463, inclusive of FIG. 98 (SEQ ID NO: 160), or (b) thecomplement of the DNA of (a).

[1222] Another embodiment is directed to fragments of a PRO1302polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1223] In another embodiment, the invention provides isolated PRO1302polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1224] In a specific aspect, the invention provides isolated nativesequence PRO1302 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 16 through 463 of FIG. 98 (SEQ ID NO:160).

[1225] In another aspect, the invention concerns an isolated PRO1302polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues16 to about 463, inclusive of FIG. 98 (SEQ ID NO: 160).

[1226] In a further aspect, the invention concerns an isolated PRO1302polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 16through 463 of FIG. 98 (SEQ ID NO: 160).

[1227] In yet another aspect, the invention concerns an isolated PRO1302polypeptide, comprising the sequence of amino acid residues 16 to about463, inclusive of FIG. 98 (SEQ ID NO: 160), or a fragment thereofsufficient to provide a binding site for an anti-PRO1302 antibody.Preferably, the PRO1302 fragment retains a qualitative biologicalactivity of a native PRO1302 polypeptide.

[1228] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1302 polypeptide havingthe sequence of amino acid residues from about 16 to about 463,inclusive of FIG. 98 (SEQ ID NO: 160), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1229] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1302 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1302 antibody.

[1230] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1302 polypeptide, bycontacting the native PRO1302 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1231] In a still further embodiment, the invention concerns acomposition comprising a PRO1302 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1232] 50. PRO1283

[1233] A cDNA clone (DNA65404-1551) has been identified, having homologyto nucleic acid encoding odorant binding protein, that encodes a novelpolypeptide, designated in the present application as “PRO1283”.

[1234] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1283 polypeptide.

[1235] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1283 polypeptide having the sequence of aminoacid residues from about 1 or about 18 to about 170, inclusive of FIG.100 (SEQ ID NO: 162), or (b) the complement of the DNA molecule of (a).

[1236] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1283 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 45 orabout 96 and about 554, inclusive, of FIG. 99 (SEQ ID NO: 161).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1237] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203244 (DNA65404-1551) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203244 (DNA65404-1551).

[1238] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 18 to about 170, inclusive of FIG. 100(SEQ ID NO: 162), or (b) the complement of the DNA of (a).

[1239] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1283 polypeptide having the sequence of amino acidresidues from 1 or about 18 to about 170, inclusive of FIG. 100 (SEQ IDNO: 162), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[1240] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1283 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 17 in the sequence of FIG.100 (SEQ ID NO: 162).

[1241] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 18 to about 170, inclusive of FIG. 100 (SEQ ID NO: 162), or (b)the complement of the DNA of (a).

[1242] Another embodiment is directed to fragments of a PRO1283polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 99 (SEQ ID NO: 161).

[1243] In another embodiment, the invention provides isolated PRO1283polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1244] In a specific aspect, the invention provides isolated nativesequence PRO1283 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 18 to about 170 ofFIG. 100 (SEQ ID NO: 162).

[1245] In another aspect, the invention concerns an isolated PRO1283polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 18 to about 170, inclusive of FIG. 100 (SEQ ID NO: 162).

[1246] In a further aspect, the invention concerns an isolated PRO1283polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 18 to about 170, inclusive of FIG. 100 (SEQ ID NO: 162).

[1247] In yet another aspect, the invention concerns an isolated PRO1283polypeptide, comprising the sequence of amino acid residues 1 or about18 to about 170, inclusive of FIG. 100 (SEQ ID NO: 162), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1283antibody. Preferably, the PRO1283 fragment retains a qualitativebiological activity of a native PRO1283 polypeptide.

[1248] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1283 polypeptide havingthe sequence of amino acid residues from about I or about 18 to about170, inclusive of FIG. 100 (SEQ ID NO: 162), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1249] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1283 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1283 antibody.

[1250] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1283 polypeptide bycontacting the native PRO1283 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1251] In a still further embodiment, the invention concerns acomposition comprising a PRO1283 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1252] 51. PRO1279

[1253] A cDNA clone (DNA65405-1547) has been identified, having homologyto nucleic acid encoding neuropsin that encodes a novel polypeptide,designated in the present application as “PRO1279”.

[1254] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1279 polypeptide.

[1255] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1279 polypeptide having the sequence of aminoacid residues from about 1 or about 19 to about 250, inclusive of FIG.102 (SEQ ID NO: 170), or (b) the complement of the DNA molecule of (a).

[1256] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1279 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 106 orabout 160 and about 855, inclusive, of FIG. 101 (SEQ ID NO: 169).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1257] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203476 (DNA65405-1547) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203476 (DNA65405-1547).

[1258] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 19 to about 250, inclusive of FIG. 102(SEQ ID NO: 170), or (b) the complement of the DNA of (a).

[1259] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1279 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 250, inclusive of FIG. 102(SEQ ID NO: 170), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1260] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1279 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 18 in the sequence of FIG.102 (SEQ ID NO: 170).

[1261] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 19 to about 250, inclusive of FIG. 102 (SEQ ID NO: 170), or (b)the complement of the DNA of (a).

[1262] Another embodiment is directed to fragments of a PRO1279polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 101 (SEQ ID NO: 169).

[1263] In another embodiment, the invention provides isolated PRO1279polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1264] In a specific aspect, the invention provides isolated nativesequence PRO1279 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 19 to about 250 ofFIG. 102 (SEQ ID NO: 170).

[1265] In another aspect, the invention concerns an isolated PRO1279polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 19 to about 250, inclusive of FIG. 102 (SEQ ID NO: 170).

[1266] In a further aspect, the invention concerns an isolated PRO1279polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 19 to about 250, inclusive of FIG. 102 (SEQ ID NO: 170).

[1267] In yet another aspect, the invention concerns an isolated PRO1279polypeptide, comprising the sequence of amino acid residues 1 or about19 to about 250, inclusive of FIG. 102 (SEQ ID NO: 170), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1279antibody. Preferably, the PRO1279 fragment retains a qualitativebiological activity of a native PRO1279 polypeptide.

[1268] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1279 polypeptide havingthe sequence of amino acid residues from about 1 or about 19 to about250, inclusive of FIG. 102 (SEQ ID NO: 170), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1269] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1279 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1279 antibody.

[1270] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1279 polypeptide bycontacting the native PRO1279 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1271] In a still further embodiment, the invention concerns acomposition comprising a PRO1279 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1272] 52. PRO1304

[1273] A cDNA clone (DNA65406-1567) has been identified, having homologyto nucleic acid encoding FK506 binding protein that encodes a novelpolypeptide, designated in the present application as “PRO1304”.

[1274] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1304 polypeptide.

[1275] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1304 polypeptide having the sequence of aminoacid residues from about 1 to about 222, inclusive of FIG. 104 (SEQ IDNO: 180), or (b) the complement of the DNA molecule of (a).

[1276] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1304 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 23 andabout 688, inclusive, of FIG. 103 (SEQ ID NO: 179). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1277] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least a about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203219 (DNA65406-1567) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203219 (DNA65406-1567).

[1278] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 222, inclusive of FIG. 104 (SEQ ID NO:180), or (b) the complement of the DNA of (a).

[1279] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1304 polypeptide having the sequence of amino acidresidues from 1 to about 222, inclusive of FIG. 104 (SEQ ID NO: 180), or(b) the complement of the DNA molecule of (a), and, if the DNA moleculehas at least about an 80% sequence identity, prefereably at least aboutan 85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1280] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1304 polypeptide, with orwithout the initiating methionine, or is complementary to such encodingnucleic acid molecule.

[1281] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 222, inclusive of FIG. 104 (SEQ ID NO: 180), or (b) thecomplement of the DNA of (a).

[1282] Another embodiment is directed to fragments of a PRO1304polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 103 (SEQ ID NO: 179).

[1283] In another embodiment, the invention provides isolated PRO1304polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1284] In a specific aspect, the invention provides isolated nativesequence PRO1304 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 222 of FIG. 104 (SEQID NO: 180).

[1285] In another aspect, the invention concerns an isolated PRO1304polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 222, inclusive of FIG. 104 (SEQ ID NO: 180).

[1286] In a further aspect, the invention concerns an isolated PRO1304polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 toabout 222, inclusive of FIG. 104 (SEQ ID NO: 180).

[1287] In yet another aspect, the invention concerns an isolated PRO1304polypeptide, comprising the sequence of amino acid residues 1 to about222, inclusive of FIG. 104 (SEQ ID NO: 180), or a fragment thereofsufficient to provide a binding site for an anti-PRO1304 antibody.Preferably, the PRO1304 fragment retains a qualitative biologicalactivity of a native PRO1304 polypeptide.

[1288] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1304 polypeptide havingthe sequence of amino acid residues from about 1 to about 222, inclusiveof FIG. 104 (SEQ ID NO: 180), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1289] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1304 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1304 antibody.

[1290] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1304 polypeptide bycontacting the native PRO1304 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1291] In a still further embodiment, the invention concerns acomposition comprising a PRO1304 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1292] 53. PRO1317

[1293] A cDNA clone (DNA65408-1578) has been identified that encodes anovel secreted polypeptide that shares homology with human CD97. Thenovel polypeptide is designated in the present application as “PRO1317”.

[1294] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1317 polypeptide.

[1295] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1317 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 74, inclusive of FIG. 106 (SEQID NO: 189), or (b) the complement of the DNA molecule of (a).

[1296] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1317 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 60 andabout 227, inclusive, of FIG. 105 (SEQ ID NO: 188). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1297] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203217 (DNA65408-1578), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203217 (DNA65408-1578).

[1298] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 74, inclusive of FIG. 106(SEQ ID NO: 189), or the complement of the DNA of (a).

[1299] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1317 polypeptide having the sequence of amino acid residues fromabout 19 to about 74, inclusive of FIG. 106 (SEQ ID NO: 189), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1300] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1317 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 18 in the sequence of FIG.106 (SEQ ID NO: 189).

[1301] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 74, inclusive of FIG. 106 (SEQ ID NO: 189), or (b) thecomplement of the DNA of (a).

[1302] Another embodiment is directed to fragments of a PRO1317polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1303] In another embodiment, the invention provides isolated PRO1317polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1304] In a specific aspect, the invention provides isolated nativesequence PRO1317 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 to 74 of FIG. 106 (SEQ ID NO: 189).

[1305] In another aspect, the invention concerns an isolated PRO1317polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 74, inclusive of FIG. 106 (SEQ ID NO: 189).

[1306] In a further aspect, the invention concerns an isolated PRO1317polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19 to74 of FIG. 106 (SEQ ID NO: 189).

[1307] In yet another aspect, the invention concerns an isolated PRO1317polypeptide, comprising the sequence of amino acid residues 19 to about74, inclusive of FIG. 106 (SEQ ID NO: 189), or a fragment thereofsufficient to provide a binding site for an anti-PRO1317 antibody.Preferably, the PRO1317 fragment retains a qualitative biologicalactivity of a native PRO1317 polypeptide.

[1308] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1317 polypeptide havingthe sequence of amino acid residues from about 19 to about 74, inclusiveof FIG. 106 (SEQ ID NO: 189), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1309] 54. PRO1303

[1310] A cDNA clone (DNA65409-1566) has been identified that encodes anovel polypeptide having sequence identity with proteases includingneuropsin and designated in the present application as “PRO1303.”

[1311] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1303 polypeptide.

[1312] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1303 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 248, inclusive of FIG. 108(SEQ ID NO: 194), or (b) the complement of the DNA molecule of (a).

[1313] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1303 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 172 andabout 864, inclusive, of FIG. 107 (SEQ ID NO: 193). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1314] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203232 (DNA65409-1566), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203232 (DNA65409-1566).

[1315] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 18 to about 248, inclusive of FIG. 108(SEQ ID NO: 194), or the complement of the DNA of (a).

[1316] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1303 polypeptide having the sequence of amino acid residues fromabout 18 to about 248, inclusive of FIG. 108 (SEQ ID NO: 194), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1317] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 18to about 248, inclusive of FIG. 108 (SEQ ID NO: 194), or (b) thecomplement of the DNA of (a).

[1318] Another embodiment is directed to fragments of a PRO1303polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1319] In another embodiment, the invention provides isolated PRO1303polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1320] In a specific aspect, the invention provides isolated nativesequence PRO1303 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 18 through 248 of FIG. 108 (SEQ ID NO:194).

[1321] In another aspect, the invention concerns an isolated PRO1303polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues18 to about 248, inclusive of FIG. 108 (SEQ ID NO: 194).

[1322] In a further aspect, the invention concerns an isolated PRO1303polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 18through 248 of FIG. 108 (SEQ ID NO: 194).

[1323] In yet another aspect, the invention concerns an isolated PRO1303polypeptide, comprising the sequence of amino acid residues 18 to about248, inclusive of FIG. 108 (SEQ ID NO: 194), or a fragment thereofsufficient to provide a binding site for an anti-PRO1303 antibody.Preferably, the PRO1303 fragment retains a qualitative biologicalactivity of a native PRO1303 polypeptide.

[1324] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1303 polypeptide havingthe sequence of amino acid residues from about 18 to about 248,inclusive of FIG. 108 (SEQ ID NO: 194), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1325] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1303 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1303 antibody.

[1326] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1303 polypeptide, bycontacting the native PRO1303 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1327] In a still further embodiment, the invention concerns acomposition comprising a PRO1303 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1328] 55. PRO1306

[1329] A cDNA clone (DNA65410-1569) has been identified that encodes anovel polypeptide having homology to AIF1/daintain and designated in thepresent application as “PRO1306”.

[1330] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1306 polypeptide.

[1331] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1306 polypeptide having the sequence of aminoacid residues from about 1 to about 150, inclusive of FIG. 110 (SEQ IDNO: 196), or (b) the complement of the DNA molecule of (a).

[1332] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1306 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 106 andabout 555, inclusive, of FIG. 109 (SEQ ID NO: 195). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1333] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203231 (DNA65410-1569), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203231 (DNA65410-1569).

[1334] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 150, inclusive of FIG. 110(SEQ ID NO: 196), or the complement of the DNA of (a).

[1335] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1306 polypeptide having the sequence of amino acid residues fromabout 1 to about 150, inclusive of FIG. 110 (SEQ ID NO: 196), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1336] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 150, inclusive of FIG. 110 (SEQ ID NO: 196), or (b) thecomplement of the DNA of (a).

[1337] Another embodiment is directed to fragments of a PRO1306polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1338] In another embodiment, the invention provides isolated PRO1306polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1339] In a specific aspect, the invention provides isolated nativesequence PRO1306 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 150 of FIG. 110 (SEQ ID NO: 196).

[1340] In another aspect, the invention concerns an isolated PRO1306polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 150, inclusive of FIG. 110 (SEQ ID NO: 196).

[1341] In a further aspect, the invention concerns an isolated PRO1306polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to150 of FIG. 110 (SEQ ID NO: 196).

[1342] In yet another aspect, the invention concerns an isolatedPRO1306polypeptide, comprising the sequence of amino acid residues 1 toabout 150, inclusive of FIG. 110 (SEQ ID NO: 196), or a fragment thereofsufficient to provide a binding site for an anti-PRO1306 antibody.Preferably, the PRO1306 fragment retains a qualitative biologicalactivity of a native PRO1306 polypeptide.

[1343] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1306 polypeptide havingthe sequence of amino acid residues from about 1 to about 150, inclusiveof FIG. 110 (SEQ ID NO: 196), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1344] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1306 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1306 antibody.

[1345] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1306 polypeptide, bycontacting the native PRO1306 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1346] In a still further embodiment, the invention concerns acomposition comprising a PRO1306 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1347] 56. PRO1336

[1348] A cDNA clone (DNA65423-1595) has been identified that encodes anovel polypeptide having sequence identity with slit and designated inthe present application as “PRO1336.”

[1349] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1336 polypeptide.

[1350] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1336 polypeptide having the sequence of aminoacid residues from 1 or about 28 to about 1523, inclusive of FIG. 112(SEQ ID NO: 198), or (b) the complement of the DNA molecule of (a).

[1351] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1336 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 164 andabout 4651, inclusive, of FIGS. 111A-B (SEQ ID NO: 197). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1352] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203227 (DNA65423-1595), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203227 (DNA65423-1595).

[1353] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 28 to about 1523, inclusive of FIG. 112(SEQ ID NO: 198), or the complement of the DNA of (a).

[1354] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1336 polypeptide having the sequence of amino acid residues fromabout 28 to about 1523, inclusive of FIG. 112 (SEQ ID NO: 198), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1355] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 28to about 1523, inclusive of FIG. 112 (SEQ ID NO: 198), or (b) thecomplement of the DNA of (a).

[1356] Another embodiment is directed to fragments of a PRO1336polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1357] In another embodiment, the invention provides isolated PRO1336polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1358] In a specific aspect, the invention provides isolated nativesequence PRO1336 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 28 through 1523 of FIG. 112 (SEQ IDNO: 198).

[1359] In another aspect, the invention concerns an isolated PRO1336polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues28 to about 1523, inclusive of FIG. 112 (SEQ ID NO: 198).

[1360] In a further aspect, the invention concerns an isolated PRO1336polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 28through 1523 of FIG. 112 (SEQ ID NO: 198).

[1361] In yet another aspect, the invention concerns an isolated PRO1336polypeptide, comprising the sequence of amino acid residues 28 to about1523, inclusive of FIG. 112 (SEQ ID NO: 198), or a fragment thereofsufficient to provide a binding site for an anti-PRO1336 antibody.Preferably, the PRO1336 fragment retains a qualitative biologicalactivity of a native PRO1336 polypeptide.

[1362] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1336 polypeptide havingthe sequence of amino acid residues from about 28 to about 1523,inclusive of FIG. 112 (SEQ ID NO: 198), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1363] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1336 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1336 antibody.

[1364] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1336 polypeptide, bycontacting the native PRO1336 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1365] In a still further embodiment, the invention concerns acomposition comprising a PRO1336 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1366] 57. PRO1278

[1367] A cDNA clone (DNA66304-1546) has been identified that encodes anovel polypeptide having homology to lysozyme C and designated in thepresent application as “PRO1278.”

[1368] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1278 polypeptide.

[1369] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1278 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 148, inclusive of FIG. 114(SEQ ID NO: 203), or (b) the complement of the DNA molecule of (a).

[1370] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1278 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 198 andabout 584, inclusive, of FIG. 113 (SEQ ID NO: 202). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1371] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203321 (DNA66304-1546), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203321 (DNA66304-1546).

[1372] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 20 to about 148, inclusive of FIG. 114(SEQ ID NO: 203), or the complement of the DNA of (a).

[1373] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1278 polypeptide having the sequence of amino acid residues fromabout 20 to about 148, inclusive of FIG. 114 (SEQ ID NO: 203), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1374] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1278 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 19 in thesequence of FIG. 114 (SEQ ID NO: 203).

[1375] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 20to about 148, inclusive of FIG. 114 (SEQ ID NO: 203), or (b) thecomplement of the DNA of (a).

[1376] Another embodiment is directed to fragments of a PRO1278polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1377] In another embodiment, the invention provides isolated PRO1278polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1378] In a specific aspect, the invention provides isolated nativesequence PRO1278 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 20 to 148 of FIG. 114 (SEQ ID NO:203).

[1379] In another aspect, the invention concerns an isolated PRO1278polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues20 to about 148, inclusive of FIG. 114 (SEQ ID NO: 203).

[1380] In a further aspect, the invention concerns an isolated PRO1278polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 20 to148 of FIG. 114 (SEQ ID NO: 203).

[1381] In yet another aspect, the invention concerns an isolated PRO1278polypeptide, comprising the sequence of amino acid residues 20 to about148, inclusive of FIG. 114 (SEQ ID NO: 203), or a fragment thereofsufficient to provide a binding site for an anti-PRO1278 antibody.Preferably, the PRO1278 fragment retains a qualitative biologicalactivity of a native PRO1278 polypeptide.

[1382] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1278 polypeptide havingthe sequence of amino acid residues from about 20 to about 148,inclusive of FIG. 114 (SEQ ID NO: 203), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1383] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1278 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1278 antibody.

[1384] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1278 polypeptide, bycontacting the native PRO1278 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1385] In a still further embodiment, the invention concerns acomposition comprising a PRO1278 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1386] 58. PRO1298

[1387] A cDNA clone (DNA66511-1563) has been identified that encodes anovel polypeptide having sequence identity with glycosyltransferases anddesignated in the present application as “PRO1298.”

[1388] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1298 polypeptide.

[1389] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1298 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 323, inclusive of FIG. 116(SEQ ID NO: 210), or (b) the complement of the DNA molecule of (a).

[1390] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1298 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 139 andabout 1062, inclusive, of FIG. 115 (SEQ ID NO: 209). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1391] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203228 (DNA66511-1563), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203228 (DNA66511-1563).

[1392] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 16 to about 323, inclusive of FIG. 116(SEQ ID NO: 210), or the complement of the DNA of (a).

[1393] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1298 polypeptide having the sequence of amino acid residues fromabout 16 to about 323, inclusive of FIG. 116 (SEQ ID NO: 210), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1394] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 16to about 323, inclusive of FIG. 116 (SEQ ID NO: 210), or (b) thecomplement of the DNA of (a).

[1395] Another embodiment is directed to fragments of a PRO1298polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1396] In another embodiment, the invention provides isolated PRO1298polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1397] In a specific aspect, the invention provides isolated nativesequence PRO1298 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 16 through 323 of FIG. 116 (SEQ ID NO:210).

[1398] In another aspect, the invention concerns an isolated PRO1298polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues16 to about 323, inclusive of FIG. 116 (SEQ ID NO: 210).

[1399] In a further aspect, the invention concerns an isolated PRO1298polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 16through 323 of FIG. 116 (SEQ ID NO: 210).

[1400] In yet another aspect, the invention concerns an isolated PRO1298polypeptide, comprising the sequence of amino acid residues 16 to about323, inclusive of FIG. 116 (SEQ ID NO: 210), or a fragment thereofsufficient to provide a binding site for an anti-PRO1298 antibody.Preferably, the PRO1298 fragment retains a qualitative biologicalactivity of a native PRO1298 polypeptide.

[1401] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1298 polypeptide havingthe sequence of amino acid residues from about 16 to about 323,inclusive of FIG. 116 (SEQ ID NO: 210), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1402] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1298 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1298 antibody.

[1403] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1298 polypeptide, bycontacting the native PRO1298 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1404] In a still further embodiment, the invention concerns acomposition comprising a PRO1298 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1405] 59. PRO1301

[1406] A cDNA clone (DNA66512-1564) has been identified that encodes anovel polypeptide having homology to cytochrome P450 and designated inthe present application a “PRO1301.”

[1407] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1301 polypeptide.

[1408] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1301 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 462, inclusive of FIG. 118(SEQ ID NO: 212), or (b) the complement of the DNA molecule of (a).

[1409] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1301 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 97 andabout 1428, inclusive, of FIG. 117 (SEQ ID NO: 211). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1410] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203218 (DNA66512-1564), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203218 (DNA66512-1564).

[1411] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 462, inclusive of FIG. 118(SEQ ID NO: 212), or the complement of the DNA of (a).

[1412] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1301 polypeptide having the sequence of amino acid residues fromabout 19 to about 462, inclusive of FIG. 118 (SEQ ID NO: 212), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1413] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1301 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionineand its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 18 in thesequence of FIG. 118 (SEQ ID NO: 212). The transmembrane domain has beententatively identified as extending from about amino acid position 271through about amino acid position 290 in the PRO1301 amino acid sequence(FIG. 118, SEQ ID NO: 212).

[1414] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 462, inclusive of FIG. 118 (SEQ ID NO: 212), or (b) thecomplement of the DNA of (a).

[1415] Another embodiment is directed to fragments of a PRO1301polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1416] In another embodiment, the invention provides isolated PRO1301polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1417] In a specific aspect, the invention provides isolated nativesequence PRO1301 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 to 462 of FIG. 118 (SEQ ID NO:212).

[1418] In another aspect, the invention concerns an isolated PRO1301polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 462, inclusive of FIG. 118 (SEQ ID NO: 212).

[1419] In a further aspect, the invention concerns an isolated PRO1301polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19 to462 of FIG. 118 (SEQ ID NO: 212).

[1420] In yet another aspect, the invention concerns an isolated PRO1301polypeptide, comprising the sequence of amino acid residues 19 to about462, inclusive of FIG. 118 (SEQ ID NO: 212), or a fragment thereofsufficient to provide a binding site for an anti-PRO1301 antibody.Preferably, the PRO1301 fragment retains a qualitative biologicalactivity of a native PRO1301 polypeptide.

[1421] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1301 polypeptide havingthe sequence of amino acid residues from about 19 to about 462,inclusive of FIG. 118 (SEQ ID NO: 212), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1422] 60. PRO1268

[1423] A cDNA clone (DNA66519-1535) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1268.”

[1424] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1268 polypeptide.

[1425] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1268 polypeptide having the sequence of aminoacid residues from about 1 to about 140, inclusive of FIG. 120 (SEQ IDNO: 214), or (b) the complement of the DNA molecule of (a).

[1426] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1268 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 89 andabout 508, inclusive, of FIG. 119 (SEQ ID NO: 213). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1427] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203236 (DNA66519-1535), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203236 (DNA66519-1535).

[1428] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 140, inclusive of FIG. 120(SEQ ID NO: 214), or the complement of the DNA of (a).

[1429] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1268 polypeptide having the sequence of amino acid residues fromabout 1 to about 140, inclusive of FIG. 120 (SEQ ID NO: 214), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1430] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1268 polypeptide, with one ormore of its soluble, i.e. transmembrane, domains deleted or inactivated,or is complementary to such encoding nucleic acid molecule.Transmembrane domains has been tentatively identified at about aminoacids 12-28 (type II), 51-66, and 107-124 in the PRO1268 amino acidsequence (FIG. 120, SEQ ID NO: 214).

[1431] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 140, inclusive of FIG. 120 (SEQ ID NO: 214), or (b) thecomplement of the DNA of (a).

[1432] Another embodiment is directed to fragments of a PRO1268polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1433] In another embodiment, the invention provides isolated PRO1268polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1434] In a specific aspect, the invention provides isolated nativesequence PRO1268 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 140 of FIG. 120 (SEQ ID NO: 214).

[1435] In another aspect, the invention concerns an isolated PRO1268polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 140, inclusive of FIG. 120 (SEQ ID NO: 214).

[1436] In a further aspect, the invention concerns an isolated PRO1268polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to140 of FIG. 120 (SEQ ID NO: 214).

[1437] In yet another aspect, the invention concerns an isolated PRO1268polypeptide, comprising the sequence of amino acid residues 1 to about140, inclusive of FIG. 120 (SEQ ID NO: 214), or a fragment thereofsufficient to provide a binding site for an anti-PRO1268 antibody.Preferably, the PRO1268 fragment retains a qualitative biologicalactivity of a native PRO1268 polypeptide.

[1438] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1268 polypeptide havingthe sequence of amino acid residues from about 1 to about 140, inclusiveof FIG. 120 (SEQ ID NO: 214), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1439] 61. PRO1269

[1440] A cDNA clone (DNA66520-1536) has been identified that encodes anovel polypeptide having homology to granulocyte peptide A anddesignated in the present application as “PRO1269.”

[1441] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1269 polypeptide.

[1442] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1269 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 196, inclusive of FIG. 122(SEQ ID NO: 216), or (b) the complement of the DNA molecule of (a).

[1443] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1269 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 86 andabout 613, inclusive, of FIG. 121 (SEQ ID NO: 215). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1444] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203226 (DNA66520-1536), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203226 (DNA66520-1536).

[1445] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 21 to about 196, inclusive of FIG. 122(SEQ ID NO: 216), or the complement of the DNA of (a).

[1446] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1269 polypeptide having the sequence of amino acid residues fromabout 21 to about 196, inclusive of FIG. 122 (SEQ ID NO: 216), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1447] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1269 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 20 in thesequence of FIG. 122 (SEQ ID NO: 216).

[1448] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 21to about 196, inclusive of FIG. 122 (SEQ ID NO: 21)6, or (b) thecomplement of the DNA of (a).

[1449] Another embodiment is directed to fragments of a PRO1269polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1450] In another embodiment, the invention provides isolated PRO1269polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1451] In a specific aspect, the invention provides isolated nativesequence PRO1269 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 21 to 196 of FIG. 122 (SEQ ID NO:216).

[1452] In another aspect, the invention concerns an isolated PRO1269polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues21 to about 196, inclusive of FIG. 122 (SEQ ID NO: 216).

[1453] In a further aspect, the invention concerns an isolated PRO1269polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 21 to196 of FIG. 122 (SEQ ID NO: 216).

[1454] In yet another aspect, the invention concerns an isolated PRO1269polypeptide, comprising the sequence of amino acid residues 21 to about196, inclusive of FIG. 122 (SEQ ID NO: 216), or a fragment thereofsufficient to provide a binding site for an anti-PRO1269 antibody.Preferably, the PRO1269 fragment retains a qualitative biologicalactivity of a native PRO1269 polypeptide.

[1455] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1269 polypeptide havingthe sequence of amino acid residues from about 21 to about 196,inclusive of FIG. 122 (SEQ ID NO: 216), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1456] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1269 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1269 antibody.

[1457] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1269 polypeptide, bycontacting the native PRO1269 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1458] In a still further embodiment, the invention concerns acomposition comprising a PRO1269 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1459] 62. PRO1327

[1460] A cDNA clone (DNA66521-1583) has been identified, having homologyto nucleic acid encoding neurexoplilin, that encodes a novelpolypeptide, designated in the present application as “PRO1327”.

[1461] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1327 polypeptide.

[1462] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1327 polypeptide having the sequence of aminoacid residues from about 1 or about 15 to about 252, inclusive of FIG.124 (SEQ ID NO: 218), or (b) the complement of the DNA molecule of (a).

[1463] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1327 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 55 orabout 97 and about 810, inclusive, of FIG. 123 (SEQ ID NO: 217).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1464] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203225 (DNA66521-1583) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203225 (DNA66521-1583).

[1465] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 15 to about 252, inclusive of FIG. 124(SEQ ID NO: 218), or (b) the complement of the DNA of (a).

[1466] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 260 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1327 polypeptide having the sequence of aminoacid residues from 1 or about 15 to about 252, inclusive of FIG. 124(SEQ ID NO: 218), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1467] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1327 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 14 in the sequence of FIG.124 (SEQ ID NO: 218).

[1468] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 15 to about 252, inclusive of FIG. 124 (SEQ ID NO: 218), or (b)the complement of the DNA of (a).

[1469] Another embodiment is directed to fragments of a PRO1327polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 123 (SEQ ID NO: 217).

[1470] In another embodiment, the invention provides isolated PRO1327polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1471] In a specific aspect, the invention provides isolated nativesequence PRO1327 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 15 to about 252 ofFIG. 124 (SEQ ID NO: 218).

[1472] In another aspect, the invention concerns an isolated PRO1327polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 15 to about 252, inclusive of FIG. 124 (SEQ ID NO: 218).

[1473] In a further aspect, the invention concerns an isolated PRO1327polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 15 to about 252, inclusive of FIG. 124 (SEQ ID NO: 218).

[1474] In yet another aspect, the invention concerns an isolated PRO1327polypeptide, comprising the sequence of amino acid residues 1 or about15 to about 252, inclusive of FIG. 124 (SEQ ID NO: 218), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1327antibody. Preferably, the PRO1327 fragment retains a qualitativebiological activity of a native PRO1327 polypeptide.

[1475] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1327 polypeptide havingthe sequence of amino acid residues from about 1 or about 15 to about252, inclusive of FIG. 124 (SEQ ID NO: 218), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1476] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1327 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1327 antibody.

[1477] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1327 polypeptide bycontacting the native PRO1327 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1478] In a still further embodiment, the invention concerns acomposition comprising a PRO1327 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1479] 63. PRO1382

[1480] A cDNA clone (DNA66526-1616) has been identified that encodes anovel polypeptide having homology to cerebellin and designated in thepresent application as “PRO1382.”

[1481] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1382 polypeptide.

[1482] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1382 polypeptide having the sequence of aminoacid residues from 1 or about 28 to about 201, inclusive of FIG. 126(SEQ ID NO: 220), or (b) the complement of the DNA molecule of (a).

[1483] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1382 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 418 andabout 939, inclusive, of FIG. 125 (SEQ ID NO: 219). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1484] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203246 (DNA66526-1616), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203246 (DNA66526-1616).

[1485] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 28 to about 201, inclusive of FIG. 126(SEQ ID NO: 220), or the complement of the DNA of (a).

[1486] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1382 polypeptide having the sequence of amino acid residues fromabout 28 to about 201, inclusive of FIG. 126 (SEQ ID NO: 220), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1487] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1382 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 27 in the sequence of FIG. 126 (SEQ ID NO: 220).

[1488] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 28to about 201, inclusive of FIG. 126 (SEQ ID NO: 220), or (b) thecomplement of the DNA of (a).

[1489] Another embodiment is directed to fragments of a PRO1382polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1490] In another embodiment, the invention provides isolated PRO1382polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1491] In a specific aspect, the invention provides isolated nativesequence PRO1382 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 28 to 201 of FIG. 126 (SEQ ID NO:220).

[1492] In another aspect, the invention concerns an isolated PRO1382polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues28 to about 201, inclusive of FIG. 126 (SEQ ID NO: 220).

[1493] In a further aspect, the invention concerns an isolated PRO1382polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 28 to201 of FIG. 126 (SEQ ID NO: 220).

[1494] In yet another aspect, the invention concerns an isolated PRO1382polypeptide, comprising the sequence of amino acid residues 28 to about201, inclusive of FIG. 126 (SEQ ID NO: 220), or a fragment thereofsufficient to provide a binding site for an anti-PRO1382 antibody.Preferably, the PRO1382 fragment retains a qualitative biologicalactivity of a native PRO1382 polypeptide.

[1495] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1382 polypeptide havingthe sequence of amino acid residues from about 28 to about 201,inclusive of FIG. 126 (SEQ ID NO: 220), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1496] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1382 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1382 antibody.

[1497] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1382 polypeptide, bycontacting the native PRO1382 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1498] In a still further embodiment, the invention concerns acomposition comprising a PRO1382 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1499] 64. PRO1328

[1500] A cDNA clone (DNA66658-1584) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1328”.

[1501] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1328 polypeptide.

[1502] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1328 polypeptide having the sequence of aminoacid residues from about 1 or about 20 to about 257, inclusive of FIG.128 (SEQ ID NO: 225), or (b) the complement of the DNA molecule of (a).

[1503] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1328 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 9 orabout 66 and about 779, inclusive, of FIG. 127 (SEQ ID NO: 224).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1504] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203229 (DNA66658-1584) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203229 (DNA66658-1584).

[1505] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 20 to about 257, inclusive of FIG. 128(SEQ ID NO: 225), or (b) the complement of the DNA of (a).

[1506] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 475 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1328 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 257, inclusive of FIG. 128(SEQ ID NO: 225), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1507] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1328 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 19 in thesequence of FIG. 128 (SEQ ID NO: 225). The transmembrane domains havebeen tentatively identified as extending from about amino acid position32 to about amino acid position 51, from about amino acid position 119to about amino acid position 138, from about amino acid position 152 toabout amino acid position 169 and from about amino acid position 216 toabout amino acid position 235 in the PRO1328 amino acid sequence (FIG.128, SEQ ID NO: 225).

[1508] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 20 to about 257, inclusive of FIG. 128 (SEQ ID NO: 225), or (b)the complement of the DNA of (a).

[1509] Another embodiment is directed to fragments of a PRO1328polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 127 (SEQ ID NO: 224).

[1510] In another embodiment, the invention provides isolated PRO1328polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1511] In a specific aspect, the invention provides isolated nativesequence PRO1328 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 20 to about 257 ofFIG. 128 (SEQ ID NO: 225).

[1512] In another aspect, the invention concerns an isolated PRO1328polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 20 to about 257, inclusive of FIG. 128 (SEQ ID NO: 225).

[1513] In a further aspect, the invention concerns an isolated PRO1328polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 20 to about 257, inclusive of FIG. 128 (SEQ ID NO: 225).

[1514] In yet another aspect, the invention concerns an isolated PRO1328polypeptide, comprising the sequence of amino acid residues 1 or about20 to about 257, inclusive of FIG. 128 (SEQ ID NO: 225), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1328antibody. Preferably, the PRO1328 fragment retains a qualitativebiological activity of a native PRO1328 polypeptide.

[1515] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1328 polypeptide havingthe sequence of amino acid residues from about 1 or about 20 to about257, inclusive of FIG. 128 (SEQ ID NO: 225), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1516] 65. PRO1325

[1517] A cDNA clone (DNA66659-1593) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1325”.

[1518] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1325 polypeptide.

[1519] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1325 polypeptide having the sequence of aminoacid residues from about 1 or about 19 to about 832, inclusive of FIG.130 (SEQ ID NO: 227), or (b) the complement of the DNA molecule of (a).

[1520] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1325 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 51 orabout 105 and about 2546, inclusive, of FIG. 129 (SEQ ID NO: 226).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1521] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203269 (DNA66659-1593) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203269 (DNA66659-1593).

[1522] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 19 to about 832, inclusive of FIG. 130(SEQ ID NO: 227), or (b) the complement of the DNA of (a).

[1523] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1325 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 832, inclusive of FIG. 130(SEQ ID NO: 227), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1524] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1325 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 18 in thesequence of FIG. 130 (SEQ ID NO: 227). The transmembrane domains havebeen tentatively identified as extending from about amino acid position292 to about amino acid position 317, from about amino acid position 451to about amino acid position 470, from about amino acid position 501 toabout amino acid position 520, from about amino acid position 607 toabout amino acid position 627 and from about amino acid position 751 toabout amino acid position 770 in the PRO1325 amino acid sequence (FIG.130, SEQ ID NO: 227).

[1525] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 19 to about 832, inclusive of FIG. 130 (SEQ ID NO: 227), or (b)the complement of the DNA of (a).

[1526] Another embodiment is directed to fragments of a PRO1325polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 129 (SEQ ID NO: 226).

[1527] In another embodiment, the invention provides isolated PRO1325polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1528] In a specific aspect, the invention provides isolated nativesequence PRO1325 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 19 to about 832 ofFIG. 130 (SEQ ID NO: 227).

[1529] In another aspect, the invention concerns an isolated PRO1325polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 19 to about 832, inclusive of FIG. 130 (SEQ ID NO: 227).

[1530] In a further aspect, the invention concerns an isolated PRO1325polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 19 to about 832, inclusive of FIG. 130 (SEQ ID NO: 227).

[1531] In yet another aspect, the invention concerns an isolated PRO1325polypeptide, comprising the sequence of amino acid residues 1 or about19 to about 832, inclusive of FIG. 130 (SEQ ID NO: 227), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1325antibody. Preferably, the PRO1325 fragment retains a qualitativebiological activity of a native PRO1325 polypeptide.

[1532] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1325 polypeptide havingthe sequence of amino acid residues from about 1 or about 19 to about832, inclusive of FIG. 130 (SEQ ID NO: 227), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1533] 66. PRO1340

[1534] A cDNA clone (DNA66663-1598) has been identified that encodes anovel polypeptide having homology to Ksp-cadherin and designated in thepresent application as “PRO1340.”

[1535] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1340 polypeptide.

[1536] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1340 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 807, inclusive of FIG. 132(SEQ ID NO: 229), or (b) the complement of the DNA molecule of (a).

[1537] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1340 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 182 andabout 2548, inclusive, of FIG. 131 (SEQ ID NO: 228). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1538] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203268 (DNA66663-1598), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203268 (DNA66663-1598).

[1539] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 807, inclusive of FIG. 132(SEQ ID NO: 229), or the complement of the DNA of (a).

[1540] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1340 polypeptide having the sequence of amino acid residues fromabout 19 to about 807, inclusive of FIG. 132 (SEQ ID NO: 229), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1541] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1340 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 18 in thesequence of FIG. 132 (SEQ ID NO: 229). The transmembrane domain has beententatively identified as extending from about amino acid position 762to about amino acid position 784 in the PRO1340 amino acid sequence(FIG. 132, SEQ ID NO: 229).

[1542] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 807, inclusive of FIG. 132 (SEQ ID NO: 229), or (b) thecomplement of the DNA of (a).

[1543] Another embodiment is directed to fragments of a PRO1340polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1544] In another embodiment, the invention provides isolated PRO1340polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1545] In a specific aspect, the invention provides isolated nativesequence PRO1340 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 to 807 of FIG. 132 (SEQ ID NO:229).

[1546] In another aspect, the invention concerns an isolated PRO1340polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 807, inclusive of FIG. 132 (SEQ ID NO: 229).

[1547] In a further aspect, the invention concerns an isolated PRO1340polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19 to807 of FIG. 132 (SEQ ID NO: 229).

[1548] In yet another aspect, the invention concerns an isolatedPRO1340polypeptide, comprising the sequence of amino acid residues 19 toabout 807, inclusive of FIG. 132 (SEQ ID NO: 229), or a fragment thereofsufficient to provide a binding site for an anti-PRO1340 antibody.Preferably, the PRO1340 fragment retains a qualitative biologicalactivity of a native PRO1340 polypeptide.

[1549] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1340 polypeptide havingthe sequence of amino acid residues from about 19 to about 807,inclusive of FIG. 132 (SEQ ID NO: 229), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1550] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1340 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1340 antibody.

[1551] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1340 polypeptide, bycontacting the native PRO1340 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1552] In a still further embodiment, the invention concerns acomposition comprising a PRO1340 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1553] 67. PRO1339

[1554] A cDNA clone (DNA66669-1597) has been identified that encodes anovel polypeptide having sequence identity with carboxypepsidases anddesignated in the present application as “PRO1339.”

[1555] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1339 polypeptide.

[1556] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1339 polypeptide having the sequence of aminoacid residues from 1 or about 17 to about 421, inclusive of FIG. 134(SEQ ID NO: 234), or (b) the complement of the DNA molecule of (a).

[1557] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1339 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 58 andabout 1271, inclusive, of FIG. 133 (SEQ ID NO: 233). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1558] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203272 (DNA66669-1597), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203272 (DNA66669-1597).

[1559] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 17 to about 421, inclusive of FIG. 134(SEQ ID NO: 234), or the complement of the DNA of (a).

[1560] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1339 polypeptide having the sequence of amino acid residues fromabout 17 to about 421, inclusive of FIG. 134 (SEQ ID NO: 234), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1561] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 17to about 421, inclusive of FIG. 134 (SEQ ID NO: 234), or (b) thecomplement of the DNA of (a).

[1562] Another embodiment is directed to fragments of a PRO1339polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1563] In another embodiment, the invention provides isolated PRO1339polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1564] In a specific aspect, the invention provides isolated nativesequence PRO1339 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 17 through 421 of FIG. 134 (SEQ ID NO:234).

[1565] In another aspect, the invention concerns an isolated PRO1339polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues17 to about 421, inclusive of FIG. 134 (SEQ ID NO: 234).

[1566] In a further aspect, the invention concerns an isolated PRO1339polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 17through 421 of FIG. 134 (SEQ ID NO: 234).

[1567] In yet another aspect, the invention concerns an isolated PRO1339polypeptide, comprising the sequence of amino acid residues 17 to about421, inclusive of FIG. 134 (SEQ ID NO: 234), or a fragment thereofsufficient to provide a binding site for an anti-PRO1339 antibody.Preferably, the PRO1339 fragment retains a qualitative biologicalactivity of a native PRO1339 polypeptide.

[1568] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1339 polypeptide havingthe sequence of amino acid residues from about 17 to about 421,inclusive of FIG. 134 (SEQ ID NO: 234), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1569] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1339 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1339 antibody.

[1570] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1339 polypeptide, bycontacting the native PRO1339 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1571] In a still further embodiment, the invention concerns acomposition comprising a PRO1339 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1572] 68. PRO1337

[1573] A cDNA clone (DNA66672-1586) has been identified that encodes anovel polypeptide having homology to human thyroxine-binding globulindesignated in the present application as “PRO1337”.

[1574] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1337 polypeptide.

[1575] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1337 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 417, inclusive of FIG. 136(SEQ ID NO: 236), or (b) the complement of the DNA molecule of (a).

[1576] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1337 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 120 andabout 1310, inclusive, of FIG. 135 (SEQ ID NO: 235). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1577] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203265 (DNA66672-66672), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203265 (DNA66672-66672).

[1578] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 21 to about 417, inclusive of FIG. 136(SEQ ID NO: 236), or the complement of the DNA of (a).

[1579] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1337 polypeptide having the sequence of amino acid residues fromabout 21 to about 417, inclusive of FIG. 136 (SEQ ID NO: 236), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1580] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1337 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 20 in the sequence of FIG.136 (SEQ ID NO: 236).

[1581] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 21to about 417, inclusive of FIG. 136 (SEQ ID NO: 236), or (b) thecomplement of the DNA of (a).

[1582] Another embodiment is directed to fragments of a PRO1337polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1583] In another embodiment, the invention provides isolated PRO1337polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1584] In a specific aspect, the invention provides isolated nativesequence PRO1337 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 21 to 417 of FIG. 136 (SEQ ID NO:236).

[1585] In another aspect, the invention concerns an isolated PRO1337polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues21 to about 417, inclusive of FIG. 136 (SEQ ID NO: 236).

[1586] In a further aspect, the invention concerns an isolated PRO1337polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 21 to417 of FIG. 136 (SEQ ID NO: 236).

[1587] In yet another aspect, the invention concerns an isolated PRO1337polypeptide, comprising the sequence of amino acid residues 21 to about417, inclusive of FIG. 136 (SEQ ID NO: 236), or a fragment thereofsufficient to provide a binding site for an anti-PRO1337 antibody.Preferably, the PRO1337 fragment retains a qualitative biologicalactivity of a native PRO1337 polypeptide.

[1588] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1337 polypeptide havingthe sequence of amino acid residues from about 21 to about 417,inclusive of FIG. 136 (SEQ ID NO: 236), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1589] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1337 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1337 antibody.

[1590] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1337 polypeptide, bycontacting the native PRO1337 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1591] In a still further embodiment, the invention concerns acomposition comprising a PRO1337 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1592] 69. PRO1342

[1593] A cDNA clone (DNA66674-1599) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1342”.

[1594] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1342 polypeptide.

[1595] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1342 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 596, inclusive of FIG. 138(SEQ ID NO: 243), or (b) the complement of the DNA molecule of (a).

[1596] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1342 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 299 andabout 2026, inclusive, of FIG. 137 (SEQ ID NO: 242). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1597] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203281 (DNA66674-1599), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203281 (DNA66674-1599).

[1598] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 21 to about 596, inclusive of FIG. 138(SEQ ID NO: 243), or the complement of the DNA of (a).

[1599] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1342 polypeptide having the sequence of amino acid residues fromabout 21 to about 596, inclusive of FIG. 138 (SEQ ID NO: 243), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1600] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1342 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domain deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position20 in the sequence of FIG. 138 (SEQ ID NO: 243). The transmembranedomain has been tentatively identified as extending from about aminoacid position 510 to about amino acid position 532 in the PRO1342 aminoacid sequence (FIG. 138, SEQ ID NO: 243).

[1601] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 21to about 596, inclusive of FIG. 138 (SEQ ID NO: 243), or (b) thecomplement of the DNA of (a).

[1602] Another embodiment is directed to fragments of a PRO1342polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1603] In another embodiment, the invention provides isolated PRO1342polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1604] In a specific aspect, the invention provides isolated nativesequence PRO1342 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 21 to 596 of FIG. 138 (SEQ ID NO:243).

[1605] In another aspect, the invention concerns an isolated PRO1342polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues21 to about 596, inclusive of FIG. 138 (SEQ ID NO: 243).

[1606] In a further aspect, the invention concerns an isolated PRO1342polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 21 to596 of FIG. 138 (SEQ ID NO: 243).

[1607] In yet another aspect, the invention concerns an isolated PRO1342polypeptide, comprising the sequence of amino acid residues 21 to about596, inclusive of FIG. 138 (SEQ ID NO: 243), or a fragment thereofsufficient to provide a binding site for an anti-PRO1342 antibody.Preferably, the PRO1342 fragment retains a qualitative biologicalactivity of a native PRO1342 polypeptide.

[1608] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1342 polypeptide havingthe sequence of amino acid residues from about 21 to about 596,inclusive of FIG. 138 (SEQ ID NO: 243), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1609] 70. PRO1343

[1610] A cDNA clone (DNA66675-1587) has been identified that encodes anovel secreted polypeptide, designated in the present application as“PRO1343”.

[1611] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1343 polypeptide.

[1612] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1343 polypeptide having the sequence of aminoacid residues from about 1 or about 26 to about 247, inclusive of FIG.140 (SEQ ID NO: 248), or (b) the complement of the DNA molecule of (a).

[1613] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1343 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 71 orabout 146 and about 811, inclusive, of FIG. 139 (SEQ ID NO: 247).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1614] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203282 (DNA66675-1587) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203282 (DNA66675-1587).

[1615] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 26 to about 247, inclusive of FIG. 140(SEQ ID NO: 248), or (b) the complement of the DNA of (a).

[1616] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1343 polypeptide having the sequence of aminoacid residues from 1 or about 26 to about 247, inclusive of FIG. 140(SEQ ID NO: 248), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1617] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1343 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 25 in the sequence of FIG.140 (SEQ ID NO: 248).

[1618] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 26 to about 247, inclusive of FIG. 140 (SEQ ID NO: 248), or (b)the complement of the DNA of (a).

[1619] Another embodiment is directed to fragments of a PRO1343polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 139 (SEQ ID NO: 247).

[1620] In another embodiment, the invention provides isolated PRO1343polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1621] In a specific aspect, the invention provides isolated nativesequence PRO1343 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 26 to about 247 ofFIG. 140 (SEQ ID NO: 248).

[1622] In another aspect, the invention concerns an isolated PRO1343polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 26 to about 247, inclusive of FIG. 140 (SEQ ID NO: 248).

[1623] In a further aspect, the invention concerns an isolated PRO1343polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 26 to about 247, inclusive of FIG. 140 (SEQ ID NO: 248).

[1624] In yet another aspect, the invention concerns an isolated PRO1343polypeptide, comprising the sequence of amino acid residues 1 or about26 to about 247, inclusive of FIG. 140 (SEQ ID NO: 248), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1343antibody. Preferably, the PRO1343 fragment retains a qualitativebiological activity of a native PRO1343 polypeptide.

[1625] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1343 polypeptide havingthe sequence of amino acid residues from about 1 or about 26 to about247, inclusive of FIG. 140 (SEQ ID NO: 248), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1626] 71. PRO1480

[1627] A cDNA clone (DNA67962-1649) has been identified that encodes anovel polypeptide having homology to Semaphorin C and designated in thepresent application as “PRO1480.”

[1628] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1480 polypeptide.

[1629] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1480 polypeptide having the sequence of aminoacid residues from about 1 to about 837, inclusive of FIG. 142 (SEQ IDNO: 253), or (b) the complement of the DNA molecule of (a).

[1630] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1480 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 241 andabout 2751, inclusive, of FIG. 141 (SEQ ID NO: 252). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1631] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203291 (DNA67962-1649), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203291 (DNA67962-1649).

[1632] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 837, inclusive of FIG. 142(SEQ ID NO: 253), or the complement of the DNA of (a).

[1633] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1480 polypeptide having the sequence of amino acid residues fromabout 1 to about 837, inclusive of FIG. 142 (SEQ ID NO: 253), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1634] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1480 polypeptide, its solublevariants, (i.e. transmembrane domains deleted or inactivated) or iscomplementary to such encoding nucleic acid molecule. Transmembranedomains have been tentatively identified as extending from about aminoacid position 23 to about amino acid position 46 (type II) and aboutamino acid position 718 to about amino acid position 738 in the PRO1480amino acid sequence (FIG. 142, SEQ ID NO: 253).

[1635] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 837, inclusive of FIG. 142 (SEQ ID NO: 253), or (b) thecomplement of the DNA of (a).

[1636] Another embodiment is directed to fragments of a PRO1480polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1637] In another embodiment, the invention provides isolated PRO1480polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1638] In a specific aspect, the invention provides isolated nativesequence PRO1480 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 837 of FIG. 142 (SEQ ID NO: 253).

[1639] In another aspect, the invention concerns an isolated PRO1480polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 837, inclusive of FIG. 142 (SEQ ID NO: 253).

[1640] In a further aspect, the invention concerns an isolated PRO1480polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to837 of FIG. 142 (SEQ ID NO: 253).

[1641] In yet another aspect, the invention concerns an isolated PRO1480polypeptide, comprising the sequence of amino acid residues 1 to about837, inclusive of FIG. 142 (SEQ ID NO: 253), or a fragment thereofsufficient to provide a binding site for an anti-PRO1480 antibody.Preferably, the PRO1480 fragment retains a qualitative biologicalactivity of a native PRO1480 polypeptide.

[1642] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1480 polypeptide havingthe sequence of amino acid residues from about 1 to about 837, inclusiveof FIG. 142 (SEQ ID NO: 253), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1643] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1480 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1480 antibody.

[1644] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1480 polypeptide, bycontacting the native PRO1480 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1645] In a still further embodiment, the invention concerns acomposition comprising a PRO1480 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1646] 72. PRO1487

[1647] A cDNA clone (DNA68836-1656) has been identified that encodes anovel polypeptide having homology to fringe protein and designated inthe present application as “PRO1487”.

[1648] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1487 polypeptide.

[1649] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1487 polypeptide having the sequence of aminoacid residues from 1 or about 24 to about 802, inclusive of FIG. 144(SEQ ID NO: 260), or (b) the complement of the DNA molecule of (a).

[1650] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1487 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 558 andabout 2894, inclusive, of FIGS. 143A-B (SEQ ID NO: 259). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1651] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203455 (DNA68836-1656), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203455 (DNA68836-1656).

[1652] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 24 to about 802, inclusive of FIG. 144(SEQ ID NO: 260), or the complement of the DNA of (a).

[1653] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1487 polypeptide having the sequence of amino acid residues fromabout 24 to about 802, inclusive of FIG. 144 (SEQ ID NO: 260), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1654] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1487 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating, or iscomplementary to such encoding nucleic acid molecule. The signal peptidehas been tentatively identified as extending from amino acid position 1through about amino acid position 23 in the sequence of FIG. 144 (SEQ IDNO: 260).

[1655] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 24to about 802, inclusive of FIG. 144 (SEQ ID NO: 260), or (b) thecomplement of the DNA of (a).

[1656] Another embodiment is directed to fragments of a PRO1487polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1657] In another embodiment, the invention provides isolated PRO1487polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1658] In a specific aspect, the invention provides isolated nativesequence PRO1487 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 24 to 802 of FIG. 144 (SEQ ID NO:260).

[1659] In another aspect, the invention concerns an isolated PRO1487polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues24 to about 802, inclusive of FIG. 144 (SEQ ID NO: 260).

[1660] In a further aspect, the invention concerns an isolated PRO1487polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 24 to802 of FIG. 144 (SEQ ID NO: 260).

[1661] In yet another aspect, the invention concerns an isolated PRO1487polypeptide, comprising the sequence of amino acid residues 24 to about802, inclusive of FIG. 144 (SEQ ID NO: 260), or a fragment thereofsufficient to provide a binding site for an anti-PRO1487 antibody.Preferably, the PRO1487 fragment retains a qualitative biologicalactivity of a native PRO1487 polypeptide.

[1662] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1487 polypeptide havingthe sequence of amino acid residues from about 24 to about 802,inclusive of FIG. 144 (SEQ ID NO: 260), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1663] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1487 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1487 antibody.

[1664] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1487 polypeptide, bycontacting the native PRO1487 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1665] In a still further embodiment, the invention concerns acomposition comprising a PRO1487 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1666] 73. PRO1418

[1667] A cDNA clone (DNA68864-1629) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1418.”

[1668] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1418 polypeptide.

[1669] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1418 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 350, inclusive of FIG. 146(SEQ ID NO: 265), or (b) the complement of the DNA molecule of (a).

[1670] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1418 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 195 andabout 1187, inclusive, of FIG. 145 (SEQ ID NO: 264). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1671] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203276 (DNA68864-1629), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203276 (DNA68864-1629).

[1672] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 20 to about 350, inclusive of FIG. 146(SEQ ID NO: 265), or the complement of the DNA of (a).

[1673] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1418 polypeptide having the sequence of amino acid residues fromabout 20 to about 350, inclusive of FIG. 146 (SEQ ID NO: 265), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1674] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 20to about 350, inclusive of FIG. 146 (SEQ ID NO: 265), or (b) thecomplement of the DNA of (a).

[1675] Another embodiment is directed to fragments of a PRO1418polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1676] In another embodiment, the invention provides isolated PRO1418polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1677] In a specific aspect, the invention provides isolated nativesequence PRO1418 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 20 through 350 of FIG. 146 (SEQ ID NO:265).

[1678] In another aspect, the invention concerns an isolated PRO1418polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues20 to about 350, inclusive of FIG. 146 (SEQ ID NO: 265).

[1679] In a further aspect, the invention concerns an isolated PRO1418polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 20through 350 of FIG. 146 (SEQ ID NO: 265).

[1680] In yet another aspect, the invention concerns an isolated PRO1418polypeptide, comprising the sequence of amino acid residues 20 to about350, inclusive of FIG. 146 (SEQ ID NO: 265), or a fragment thereofsufficient to provide a binding site for an anti-PRO1418 antibody.Preferably, the PRO1418 fragment retains a qualitative biologicalactivity of a native PRO1418 polypeptide.

[1681] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1418 polypeptide havingthe sequence of amino acid residues from about 20 to about 350,inclusive of FIG. 146 (SEQ ID NO: 265), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1682] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1418 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1418 antibody.

[1683] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1418 polypeptide, bycontacting the native PRO1418 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1684] In a still further embodiment, the invention concerns acomposition comprising a PRO1418 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1685] 74. PRO1472

[1686] A cDNA clone (DNA68866-1644) has been identified that encodes anovel polypeptide having sequence identity with butyrophilin anddesignated in the present application as “PRO1472.”

[1687] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1472 polypeptide.

[1688] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1472 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 466, inclusive of FIG. 148(SEQ ID NO: 267), or (b) the complement of the DNA molecule of (a).

[1689] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1472 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 185 andabout 1531, inclusive, of FIG. 147 (SEQ ID NO: 266). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1690] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203283 (DNA68866-1644), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203283 (DNA68866-1644).

[1691] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 18 to about 466, inclusive of FIG. 148(SEQ ID NO: 267), or the complement of the DNA of (a).

[1692] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1472 polypeptide having the sequence of amino acid residues fromabout 18 to about 466, inclusive of FIG. 148 (SEQ ID NO: 267), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1693] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1472 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domains deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 1-17 in thesequence of FIG. 148 (SEQ ID NO: 267). The transmembrane domains havebeen tentatively identified as being from about amino acid position 131through about amino acid position 150 and from about amino acid position235 through about amino acid position 259 in the PRO1472 amino acidsequence (FIG. 148, SEQ ID NO: 267). It is understood that PRO1472 canbe manipulated to contain only particular regions given the informationherein, e.g. to have only the extracellular or cytoplasmic regions only,or to have the carboxyl end truncated wherein the second transmembranedomain is deleted.

[1694] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 18to about 466, inclusive of FIG. 148 (SEQ ID NO: 267), or (b) thecomplement of the DNA of (a).

[1695] Another embodiment is directed to fragments of a PRO1472polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1696] In another embodiment, the invention provides isolated PRO1472polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1697] In a specific aspect, the invention provides isolated nativesequence PRO1472 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 18 through 466 of FIG. 148 (SEQ ID NO:267).

[1698] In another aspect, the invention concerns an isolated PRO1472polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues18 to about 466, inclusive of FIG. 148 (SEQ ID NO: 267).

[1699] In a further aspect, the invention concerns an isolated PRO1472polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 18through 466 of FIG. 148 (SEQ ID NO: 267).

[1700] In yet another aspect, the invention concerns an isolated PRO1472polypeptide, comprising the sequence of amino acid residues 18 to about466, inclusive of FIG. 148 (SEQ ID NO: 267), or a fragment thereofsufficient to provide a binding site for an anti-PRO1472 antibody.Preferably, the PRO1472 fragment retains a qualitative biologicalactivity of a native PRO1472 polypeptide.

[1701] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1472 polypeptide havingthe sequence of amino acid residues from about 18 to about 466,inclusive of FIG. 148 (SEQ ID NO: 267), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1702] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1472 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1472 antibody.

[1703] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1472 polypeptide, bycontacting the native PRO1472 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1704] In a still further embodiment, the invention concerns acomposition comprising a PRO1472 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1705] 75. PRO1461

[1706] A cDNA clone (DNA68871-1638) has been identified that encodes anovel polypeptide having homology to serine protease and designated inthe present application as “PRO1461”.

[1707] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1461 polypeptide.

[1708] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1461 polypeptide having the sequence of aminoacid residues from about 1 to about 423, inclusive of FIG. 150 (SEQ IDNO: 269), or (b) the complement of the DNA molecule of (a).

[1709] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1461 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 32 andabout 1300, inclusive, of FIG. 149 (SEQ ID NO: 268). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1710] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203280 (DNA68871-68871), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203280 (DNA68871-68871).

[1711] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 423, inclusive of FIG. 150(SEQ ID NO: 269), or the complement of the DNA of (a).

[1712] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1461 polypeptide having the sequence of amino acid residues fromabout 1 to about 423, inclusive of FIG. 150 (SEQ ID NO: 269), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1713] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1461 polypeptide, with orwithout the initiating methionine, and its soluble variants (i.e.transmembrane domain deleted or inactivated), or is complementary tosuch encoding nucleic acid molecule. A type II transmembrane domain hasbeen tentatively identified as extending from about amino acid position21 to about amino acid position 40 in the PRO1461 amino acid sequence(FIG. 150, SEQ ID NO: 269).

[1714] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 423, inclusive of FIG. 150 (SEQ ID NO: 269), or (b) thecomplement of the DNA of (a).

[1715] Another embodiment is directed to fragments of a PRO1461polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1716] In another embodiment, the invention provides isolated PRO1461polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1717] In a specific aspect, the invention provides isolated nativesequence PRO1461 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 423 of FIG. 150 (SEQ ID NO: 269).

[1718] In another aspect, the invention concerns an isolated PRO1461polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 423, inclusive of FIG. 150 (SEQ ID NO: 269).

[1719] In a further aspect, the invention concerns an isolated PRO1461polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to423 of FIG. 150 (SEQ ID NO: 269).

[1720] In yet another aspect, the invention concerns an isolated PRO1461polypeptide, comprising the sequence of amino acid residues 1 to about423, inclusive of FIG. 150 (SEQ ID NO: 269), or a fragment thereofsufficient to provide a binding site for an anti-PRO1461 antibody.Preferably, the PRO1461 fragment retains a qualitative biologicalactivity of a native PRO1461 polypeptide.

[1721] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1461 polypeptide havingthe sequence of amino acid residues from about 1 to about 423, inclusiveof FIG. 150 (SEQ ID NO: 269), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1722] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1461 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1461 antibody.

[1723] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1461 polypeptide, bycontacting the native PRO1461 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1724] In a still further embodiment, the invention concerns acomposition comprising a PRO1461 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1725] 76. PRO1410

[1726] A cDNA clone (DNA68874-1622) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1410”.

[1727] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1410 polypeptide.

[1728] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1410 polypeptide having the sequence of aminoacid residues from about 1 or about 21 to about 238, inclusive of FIG.152 (SEQ ID NO: 271), or (b) the complement of the DNA molecule of (a).

[1729] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1410 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 152 orabout 212 and about 865, inclusive, of FIG. 151 (SEQ ID NO: 270).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1730] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203277 (DNA68874-1622) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203277 (DNA68874-1622).

[1731] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 21 to about 238, inclusive of FIG. 152(SEQ ID NO: 271), or (b) the complement of the DNA of (a).

[1732] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1410 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 238, inclusive of FIG. 152(SEQ ID NO: 271), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1733] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1410 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 20 in thesequence of FIG. 152 (SEQ ID NO: 271). The transmembrane domain has beententatively identified as extending from about amino acid position 194to about amino acid position 220 in the PRO1410 amino acid sequence(FIG. 152, SEQ ID NO: 271).

[1734] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 21 to about 238, inclusive of FIG. 152 (SEQ ID NO: 271), or (b)the complement of the DNA of (a).

[1735] Another embodiment is directed to fragments of a PRO1410polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 151 (SEQ ID NO: 270).

[1736] In another embodiment, the invention provides isolated PRO1410polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1737] In a specific aspect, the invention provides isolated nativesequence PRO1410 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 21 to about 238 ofFIG. 152 (SEQ ID NO: 271).

[1738] In another aspect, the invention concerns an isolated PRO1410polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 21 to about 238, inclusive of FIG. 152 (SEQ ID NO: 271).

[1739] In a further aspect, the invention concerns an isolated PRO1410polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence residues 1 or about21 to about 238, inclusive of FIG. 152 (SEQ ID NO: 271).

[1740] In yet another aspect, the invention concerns an isolated PRO1410polypeptide, comprising the sequence of amino acid residues 1 or about21 to about 238, inclusive of FIG. 152 (SEQ ID NO: 271), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1410antibody. Preferably, the PRO1410 fragment retains a qualitativebiological activity of a native PRO1410 polypeptide.

[1741] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1410 polypeptide havingthe sequence of amino acid residues from about 1 or about 21 to about238, inclusive of FIG. 152 (SEQ ID NO: 271), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1742] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1410 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1410 antibody.

[1743] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1410 polypeptide bycontacting the native PRO1410 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1744] In a still further embodiment, the invention concerns acomposition comprising a PRO1410 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1745] 77. PRO1568

[1746] A cDNA clone (DNA68880-1676) has been identified that encodes anovel polypeptide having sequence identity with tetraspanins anddesignated in the present application as “PRO1568.”

[1747] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1568 polypeptide.

[1748] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1568 polypeptide having the sequence of aminoacid residues from 1 or about 34 to about 305, inclusive of FIG. 154(SEQ ID NO: 273), or (b) the complement of the DNA molecule of (a).

[1749] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1568 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 307 andabout 1122, inclusive, of FIG. 153 (SEQ ID NO: 272). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1750] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203319 (DNA68880-1676), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203319 (DNA68880-1676).

[1751] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 34 to about 305, inclusive of FIG. 154(SEQ ID NO: 273), or the complement of the DNA of (a).

[1752] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1568 polypeptide having the sequence of amino acid residues fromabout 34 to about 305, inclusive of FIG. 154 (SEQ ID NO: 273), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1753] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1568 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 33 in thesequence of FIG. 154 (SEQ ID NO: 273). The transmembrane domains havebeen tentatively identified as extending from about amino acids 12-35,57-86, 94-114 and 226-248 in the PRO1568 amino acid sequence (FIG. 154,SEQ ID NO: 273).

[1754] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 34to about 305, inclusive of FIG. 154 (SEQ ID NO: 273), or (b) thecomplement of the DNA of (a).

[1755] Another embodiment is directed to fragments of a PRO1568polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1756] In another embodiment, the invention provides isolated PRO1568polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1757] In a specific aspect, the invention provides isolated nativesequence PRO1568 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 34 through 305 of FIG. 154 (SEQ ID NO:273).

[1758] In another aspect, the invention concerns an isolated PRO1568polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues34 to about 305, inclusive of FIG. 154 (SEQ ID NO: 273).

[1759] In a further aspect, the invention concerns an isolated PRO1568polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 34through 305 of FIG. 154 (SEQ ID NO: 273).

[1760] In yet another aspect, the invention concerns an isolated PRO1568polypeptide, comprising the sequence of amino acid residues 34 to about305, inclusive of FIG. 154 (SEQ ID NO: 273), or a fragment thereofsufficient to provide a binding site for an anti-PRO1568 antibody.Preferably, the PRO1568 fragment retains a qualitative biologicalactivity of a native PRO1568 polypeptide.

[1761] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1568 polypeptide havingthe sequence of amino acid residues from about 34 to about 305,inclusive of FIG. 154 (SEQ ID NO: 273), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1762] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1568 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1568 antibody.

[1763] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1568 polypeptide, bycontacting the native PRO1568 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1764] In a still further embodiment, the invention concerns acomposition comprising a PRO1568 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1765] 78. PRO1570

[1766] A cDNA clone (DNA68885-1678) has been identified that encodes anovel polypeptide having sequence identity with SP60 and designated inthe present application as “PRO1570.” In particular, for the first time,Applicants have identified an additional 199 amino acids on the aminoterminal end of the protein previously identified as SP60.

[1767] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1570 polypeptide.

[1768] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1570 polypeptide having the sequence of aminoacid residues from about 1 to about 432, inclusive of FIG. 156 (SEQ IDNO: 275), or (b) the complement of the DNA molecule of (a).

[1769] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1570 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 210 andabout 1505, inclusive, of FIG. 155 (SEQ ID NO: 274). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1770] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203311 (DNA68885-1678), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203311 (DNA68885-1678).

[1771] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 432, inclusive of FIG. 156(SEQ ID NO: 275), or the complement of the DNA of (a).

[1772] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1570 polypeptide having the sequence of amino acid residues fromabout 1 to about 432, inclusive of FIG. 156 (SEQ ID NO: 275), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule. In a preferred embodiment, theprobes provided herein are from the amino terminal end of the peptideidentified in FIG. 1, defined as amino acids 1-199 of SEQ ID NO: 275.

[1773] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1570 polypeptide, in a formwhich is secreted and is soluble, i.e. transmembrane domain deleted,truncated or inactivated variants.

[1774] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 432, inclusive of FIG. 156 (SEQ ID NO: 275), or (b) thecomplement of the DNA of (a).

[1775] Another embodiment is directed to fragments of a PRO1570polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length. Preferably,the probes are from the amino terminal end as provided herein.

[1776] In another embodiment, the invention provides isolated PRO1570polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1777] In a specific aspect, the invention provides isolated nativesequence PRO1570 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 through 432 of FIG. 156 (SEQ ID NO:275).

[1778] In another aspect, the invention concerns an isolated PRO1570polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 432, inclusive of FIG. 156 (SEQ ID NO: 275).

[1779] In a further aspect, the invention concerns an isolated PRO1570polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1through 432 of FIG. 156 (SEQ ID NO: 275).

[1780] In yet another aspect, the invention concerns an isolated PRO1570polypeptide, comprising the sequence of amino acid residues 1 to about432, inclusive of FIG. 156 (SEQ ID NO: 275), or a fragment thereofsufficient to provide a binding site for an anti-PRO1570 antibody.Preferably, the PRO1570 fragment retains a qualitative biologicalactivity of a native PRO1570 polypeptide.

[1781] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1570 polypeptide havingthe sequence of amino acid residues from about 1 to about 432, inclusiveof FIG. 156 (SEQ ID NO: 275), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1782] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1570 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1570 antibody.

[1783] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1570 polypeptide, bycontacting the native PRO1570 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1784] In a still further embodiment, the invention concerns acomposition comprising a PRO1570 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1785] 79. PRO1317

[1786] A cDNA clone (DNA71166-1685) has been identified that encodes anovel polypeptide having homology to semaphorin B and designated in thepresent application as “PRO1317”.

[1787] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1317 polypeptide.

[1788] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1317 polypeptide having the sequence of aminoacid residues from 1 or about 31 to about 761, inclusive of FIG. 158(SEQ ID NO: 277), or (b) the complement of the DNA molecule of (a).

[1789] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1317 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 195 andabout 2387, inclusive, of FIG. 157 (SEQ ID NO: 276). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1790] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203355 (DNA71166-1685), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203355 (DNA71166-1685).

[1791] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 31 to about 761, inclusive of FIG. 158(SEQ ID NO: 277), or the complement of the DNA of (a).

[1792] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1317 polypeptide having the sequence of amino acid residues fromabout 31 to about 761, inclusive of FIG. 158 (SEQ ID NO: 277), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1793] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1317 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domains deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position30 in the sequence of FIG. 158 (SEQ ID NO: 277). Transmembrane domainshave been tentatively identified as extending from about amino acidpositions 13-31, 136-156, 222-247, 474-490, and 685-704 in the PRO1317amino acid sequence (FIG. 158, SEQ ID NO: 277).

[1794] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 31to about 761, inclusive of FIG. 158 (SEQ ID NO: 277), or (b) thecomplement of the DNA of (a).

[1795] Another embodiment is directed to fragments of a PRO1317polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1796] In another embodiment, the invention provides isolated PRO1317polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1797] In a specific aspect, the invention provides isolated nativesequence PRO1317 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 31 to 761 of FIG. 158 (SEQ ID NO:277).

[1798] In another aspect, the invention concerns an isolated PRO1317polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues31 to about 761, inclusive of FIG. 158 (SEQ ID NO: 277).

[1799] In a further aspect, the invention concerns an isolated PRO1317polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 31 to761 of FIG. 158 (SEQ ID NO: 277).

[1800] In yet another aspect, the invention concerns an isolated PRO1317polypeptide, comprising the sequence of amino acid residues 31 to about761, inclusive of FIG. 158 (SEQ ID NO: 277), or a fragment thereofsufficient to provide a binding site for an anti-PRO1317 antibody.Preferably, the PRO1317 fragment retains a qualitative biologicalactivity of a native PRO1317 polypeptide.

[1801] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1317 polypeptide havingthe sequence of amino acid residues from about 31 to about 761,inclusive of FIG. 158 (SEQ ID NO: 277), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (ii) recovering the polypeptide fromthe cell culture.

[1802] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1317 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1317 antibody.

[1803] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1317 polypeptide, bycontacting the native PRO1317 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1804] In a still further embodiment, the invention concerns acomposition comprising a PRO1317 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1805] 80. PRO1780

[1806] A cDNA clone (DNA71169-1709) has been identified that encodes anovel polypeptide having homology to glucuronosyltransferase anddesignated in the present application as “PRO1780”.

[1807] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1780 polypeptide.

[1808] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1780 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 523, inclusive of FIG. 160(SEQ ID NO: 282), or (b) the complement of the DNA molecule of (a).

[1809] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1780 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 125 andabout 1636, inclusive, of FIG. 159 (SEQ ID NO: 281). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1810] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203467 (DNA71169-1709), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203467 (DNA71169-1709).

[1811] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 20 to about 523, inclusive of FIG. 160(SEQ ID NO: 282), or the complement of the DNA of (a).

[1812] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 and produced by hybridizing a test DNA molecule understringent conditions with (a) a DNA molecule encoding a PRO1780polypeptide having the sequence of amino acid residues from about 20 toabout 523, inclusive of FIG. 160 (SEQ ID NO: 282), or (b) the complementof the DNA molecule of (a), and, if the DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b),isolating the test DNA molecule.

[1813] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1780 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domain deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position19 in the sequence of FIG. 160 (SEQ ID NO: 282). The transmembranedomain has been tentatively identified as extending from about aminoacid position 483 to about amino acid position 504 in the PRO1780 aminoacid sequence (FIG. 160, SEQ ID NO: 282).

[1814] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 20to about 523, inclusive of FIG. 160 (SEQ ID NO: 282), or (b) thecomplement of the DNA of (a).

[1815] Another embodiment is directed to fragments of a PRO1780polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1816] In another embodiment, the invention provides isolated PRO1780polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1817] In a specific aspect, the invention provides isolated nativesequence PRO1780 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 20 to 523 of FIG. 160 (SEQ ID NO:282).

[1818] In another aspect, the invention concerns an isolated PRO1780polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues20 to about 523, inclusive of FIG. 160 (SEQ ID NO: 282).

[1819] In a further aspect, the invention concerns an isolated PRO1780polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 20 to523 of FIG. 160 (SEQ ID NO: 282).

[1820] In yet another aspect, the invention concerns an isolated PRO1780polypeptide, comprising the sequence of amino acid residues 20 to about523, inclusive of FIG. 160 (SEQ ID NO: 282), or a fragment thereofsufficient to provide a binding site for an anti-PRO1780 antibody.Preferably, the PRO1780 fragment retains a qualitative biologicalactivity of a native PRO1780 polypeptide.

[1821] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1780 polypeptide havingthe sequence of amino acid residues from about 20 to about 523,inclusive of FIG. 160 (SEQ ID NO: 282), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1822] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1780 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1780 antibody.

[1823] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1780 polypeptide, bycontacting the native PRO1780 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1824] In a still further embodiment, the invention concerns acomposition comprising a PRO1780 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1825] 81. PRO1486

[1826] A cDNA clone (DNA71180-1655) has been identified that encodes anovel polypeptide having sequence identity with cerebellin, particularlyprecerebellin, and designated in the present application as “PRO1486.”

[1827] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1486 polypeptide.

[1828] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1486 polypeptide having the sequence of aminoacid residues from 1 or about 33 to about 205, inclusive of FIG. 162(SEQ ID NO: 287), or (b) the complement of the DNA molecule of (a).

[1829] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1486 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 568 andabout 1086, inclusive, of FIG. 161 (SEQ ID NO: 286). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1830] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203403 (DNA71180-1655), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203403 (DNA71180-1655).

[1831] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 33 to about 205, inclusive of FIG. 162(SEQ ID NO: 287), or the complement of the DNA of (a).

[1832] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1486 polypeptide having the sequence of amino acid residues fromabout 33 to about 205, inclusive of FIG. 162 (SEQ ID NO: 287), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1833] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 33to about 205, inclusive of FIG. 162 (SEQ ID NO: 287), or (b) thecomplement of the DNA of (a).

[1834] Another embodiment is directed to fragments of a PRO1486polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1835] In another embodiment, the invention provides isolated PRO1486polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1836] In a specific aspect, the invention provides isolated nativesequence PRO1486 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 33 through 205 of FIG. 162 (SEQ ID NO:287).

[1837] In another aspect, the invention concerns an isolated PRO1486polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues33 to about 205, inclusive of FIG. 162 (SEQ ID NO: 287).

[1838] In a further aspect, the invention concerns an isolated PRO1486polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 33through 205 of FIG. 162 (SEQ ID NO: 287).

[1839] In yet another aspect, the invention concerns an isolated PRO1486polypeptide, comprising the sequence of amino acid residues 33 to about205, inclusive of FIG. 162 (SEQ ID NO: 287), or a fragment thereofsufficient to provide a binding site for an anti-PRO1486 antibody.Preferably, the PRO1486 fragment retains a qualitative biologicalactivity of a native PRO1486 polypeptide.

[1840] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1486 polypeptide havingthe sequence of amino acid residues from about 33 to about 205,inclusive of FIG. 162 (SEQ ID NO: 287), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1841] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1486 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1486 antibody.

[1842] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1486 polypeptide, bycontacting the native PRO1486 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1843] In a still further embodiment, the invention concerns acomposition comprising a PRO1486 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1844] 82. PRO1433

[1845] A cDNA clone (DNA71184-1634) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1433”.

[1846] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1433 polypeptide.

[1847] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1433 polypeptide having the sequence of aminoacid residues from about 1 to about 388, inclusive of FIG. 164 (SEQ IDNO: 292), or (b) the complement of the DNA molecule of (a).

[1848] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1433 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 185 andabout 1348, inclusive, of FIG. 163 (SEQ ID NO: 291). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1849] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203266 (DNA71184-1634) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203266 (DNA71184-1634).

[1850] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 388, inclusive of FIG. 164 (SEQ ID NO:292), or (b) the complement of the DNA of (a).

[1851] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 250 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1433 polypeptide having the sequence of aminoacid residues from 1 to about 388, inclusive of FIG. 164 (SEQ ID NO:292), or (b) the complement of the DNA molecule of (a), and, if the DNAmolecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[1852] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1433 polypeptide, with orwithout the initiating methionine, and its soluble, i.e., transmembranedomain deleted or inactivated variants, or is complementary to suchencoding nucleic acid molecule. The transmembrane domain has beententatively identified as extending from about amino acid position 76 toabout amino acid position 97 in the PRO1433 amino acid sequence (FIG.164, SEQ ID NO: 292).

[1853] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 388, inclusive of FIG. 164 (SEQ ID NO: 292), or (b) thecomplement of the DNA of (a).

[1854] Another embodiment is directed to fragments of a PRO1433polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 163 (SEQ ID NO: 291).

[1855] In another embodiment, the invention provides isolated PRO1433polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1856] In a specific aspect, the invention provides isolated nativesequence PRO1433 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 388 of FIG. 164 (SEQID NO: 292).

[1857] In another aspect, the invention concerns an isolated PRO1433polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 388, inclusive of FIG. 164 (SEQ ID NO: 292).

[1858] In a further aspect, the invention concerns an isolated PRO1433polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues I toabout 388, inclusive of FIG. 164 (SEQ ID NO: 292).

[1859] In yet another aspect, the invention concerns an isolated PRO1433polypeptide, comprising the sequence of amino acid residues 1 to about388, inclusive of FIG. 164 (SEQ ID NO: 292), or a fragment thereofsufficient to provide a binding site for an anti-PRO1433 antibody.Preferably, the PRO1433 fragment retains a qualitative biologicalactivity of a native PRO1433 polypeptide.

[1860] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1433 polypeptide havingthe sequence of amino acid residues from about 1 to about 388, inclusiveof FIG. 164 (SEQ ID NO: 292), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1861] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1433 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1433 antibody.

[1862] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1433 polypeptide bycontacting the native PRO1433 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1863] In a still further embodiment, the invention concerns acomposition comprising a PRO1433 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1864] 83. PRO1490

[1865] A cDNA clone (DNA71213-1659) has been identified, having homologyto nucleic acid encoding a 1-acyl-sn-glycerol-3-phosphateacyltransferase protein that encodes a novel polypeptide, designated inthe present application as “PRO1490”.

[1866] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1490 polypeptide.

[1867] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1490 polypeptide having the sequence of aminoacid residues from about 1 or about 26 to about 368, inclusive of FIG.166 (SEQ ID NO: 297), or (b) the complement of the DNA molecule of (a).

[1868] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1490 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 272 orabout 347 and about 1375, inclusive, of FIG. 165 (SEQ ID NO: 296).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1869] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203401 (DNA71213-1659) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203401 (DNA71213-1659).

[1870] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 26 to about 368, inclusive of FIG. 166(SEQ ID NO: 297), or (b) the complement of the DNA of (a).

[1871] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 285 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1490 polypeptide having the sequence of aminoacid residues from 1 or about 26 to about 368, inclusive of FIG. 166(SEQ ID NO: 297), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1872] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1490 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 25 in thesequence of FIG. 166 (SEQ ID NO: 297). The transmembrane domains havebeen tentatively identified as extending from about amino acid position307 to about amino acid position 323 and from about amino acid position335 to about amino acid position 352 in the PRO1490 amino acid sequence(FIG. 166, SEQ ID NO: 297).

[1873] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 26 to about 368, inclusive of FIG. 166 (SEQ ID NO: 297), or (b)the complement of the DNA of (a).

[1874] Another embodiment is directed to fragments of a PRO1490polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 165 (SEQ ID NO: 296).

[1875] In another embodiment, the invention provides isolated PRO1490polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1876] In a specific aspect, the invention provides isolated nativesequence PRO1490 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 26 to about 368 ofFIG. 166 (SEQ ID NO: 297).

[1877] In another aspect, the invention concerns an isolated PRO1490polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 26 to about 368, inclusive of FIG. 166 (SEQ ID NO: 297).

[1878] In a further aspect, the invention concerns an isolated PRO1490polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 26 to about 368, inclusive of FIG. 166 (SEQ ID NO: 297).

[1879] In yet another aspect, the invention concerns an isolated PRO1490polypeptide, comprising the sequence of amino acid residues 1 or about26 to about 368, inclusive of FIG. 166 (SEQ ID NO: 297), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1490antibody. Preferably, the PRO1490 fragment retains a qualitativebiological activity of a native PRO1490 polypeptide.

[1880] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1490 polypeptide havingthe sequence of amino acid residues from about 1 or about 26 to about368, inclusive of FIG. 166 (SEQ ID NO: 297), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1881] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1490 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1490 antibody.

[1882] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1490 polypeptide bycontacting the native PRO1490 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1883] In a still further embodiment, the invention concerns acomposition comprising a PRO1490polypeptide, or an agonist or antagonistas hereinabove defined, in combination with a pharmaceuticallyacceptable carrier.

[1884] 84. PRO1482

[1885] A cDNA clone (DNA71234-1651) has been identified that encodes anovel secreted polypeptide, designated in the present application as“PRO1482”.

[1886] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1482 polypeptide.

[1887] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1482 polypeptide having the sequence of aminoacid residues from about 1 or about 29 to about 143, inclusive of FIG.168 (SEQ ID NO: 302), or (b) the complement of the DNA molecule of (a).

[1888] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1482 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 33 orabout 117 and about 461, inclusive, of FIG. 167 (SEQ ID NO: 301).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1889] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203402 (DNA71234-1651) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203402 (DNA71234-1651).

[1890] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 29 to about 143, inclusive of FIG. 168(SEQ ID NO: 302), or (b) the complement of the DNA of (a).

[1891] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 260 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1482 polypeptide having the sequence of aminoacid residues from 1 or about 29 to about 143, inclusive of FIG. 168(SEQ ID NO: 302), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1892] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1482 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 28 in the sequence of FIG.168 (SEQ ID NO: 302).

[1893] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 29 to about 143, inclusive of FIG. 168 (SEQ ID NO: 302), or (b)the complement of the DNA of (a).

[1894] Another embodiment is directed to fragments of a PRO1482polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 167 (SEQ ID NO: 301).

[1895] In another embodiment, the invention provides isolated PRO1482polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1896] In a specific aspect, the invention provides isolated nativesequence PRO1482 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 29 to about 143 ofFIG. 168 (SEQ ID NO: 302).

[1897] In another aspect, the invention concerns an isolated PRO1482polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 29 to about 143, inclusive of FIG. 168 (SEQ ID NO: 302).

[1898] In a further aspect, the invention concerns an isolated PRO1482polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues I orabout 29 to about 143, inclusive of FIG. 168 (SEQ ID NO: 302).

[1899] In yet another aspect, the invention concerns an isolated PRO1482polypeptide, comprising the sequence of amino acid residues 1 or about29 to about 143, inclusive of FIG. 168 (SEQ ID NO: 302), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1482antibody. Preferably, the PRO1482 fragment retains a qualitativebiological activity of a native PRO1482 polypeptide.

[1900] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1482 polypeptide havingthe sequence of amino acid residues from about 1 or about 29 to about143, inclusive of FIG. 168 (SEQ ID NO: 302), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1901] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1482 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1482 antibody.

[1902] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1482 polypeptide bycontacting the native PRO1482 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1903] In a still further embodiment, the invention concerns acomposition comprising a PRO1482 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1904] 85. PRO1446

[1905] A cDNA clone (DNA71277-1636) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1446.”

[1906] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1446 polypeptide.

[1907] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1446 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 109, inclusive of FIG. 170(SEQ ID NO: 304), or (b) the complement of the DNA molecule of (a).

[1908] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1446 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 197 andabout 478, inclusive, of FIG. 169 (SEQ ID NO: 303). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1909] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203285 (DNA71277-1636), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203285 (DNA71277-1636).

[1910] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 16 to about 109, inclusive of FIG. 170(SEQ ID NO: 304), or the complement of the DNA of (a).

[1911] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1446 polypeptide having the sequence of amino acid residues fromabout 16 to about 109, inclusive of FIG. 170 (SEQ ID NO: 304), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1912] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 16to about 109, inclusive of FIG. 170 (SEQ ID NO: 304), or (b) thecomplement of the DNA of (a).

[1913] Another embodiment is directed to fragments of a PRO1446polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1914] In another embodiment, the invention provides isolated PRO1446polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1915] In a specific aspect, the invention provides isolated nativesequence PRO1446 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 16 through 109 of FIG. 170 (SEQ ID NO:304).

[1916] In another aspect, the invention concerns an isolated PRO1446polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues16 to about 109, inclusive of FIG. 170 (SEQ ID NO: 304).

[1917] In a further aspect, the invention concerns an isolated PRO1446polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 16through 109 of FIG. 170 (SEQ ID NO: 304).

[1918] In yet another aspect, the invention concerns an isolated PRO1446polypeptide, comprising the sequence of amino acid residues 16 to about109, inclusive of FIG. 170 (SEQ ID NO: 304), or a fragment thereofsufficient to provide a binding site for an anti-PRO1446 antibody.Preferably, the PRO1446 fragment retains a qualitative biologicalactivity of a native PRO1446 polypeptide.

[1919] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1446 polypeptide havingthe sequence of amino acid residues from about 16 to about 109,inclusive of FIG. 170 (SEQ ID NO: 304), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1920] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1446 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1446 antibody.

[1921] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1446 polypeptide, bycontacting the native PRO1446 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1922] In a still further embodiment, the invention concerns acomposition comprising a PRO1446 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1923] 86. PRO1558

[1924] A cDNA clone (DNA71282-1668) has been identified, having homologyto nucleic acid encoding methyltransferase enzymes that encodes a novelpolypeptide, designated in the present application as “PRO1558”.

[1925] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1558 polypeptide.

[1926] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1558 polypeptide having the sequence of aminoacid residues from about 1 or about 26 to about 262, inclusive of FIG.172 (SEQ ID NO: 306), or (b) the complement of the DNA molecule of (a).

[1927] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1558 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 84 orabout 159 and about 869, inclusive, of FIG. 171 (SEQ ID NO: 305).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1928] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203312 (DNA71282-1668) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203312 (DNA71282-1668).

[1929] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 26 to about 262, inclusive of FIG. 172(SEQ ID NO: 306), or (b) the complement of the DNA of (a).

[1930] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1558 polypeptide having the sequence of aminoacid residues from 1 or about 26 to about 262, inclusive of FIG. 172(SEQ ID NO: 306), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1931] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1558 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 25 in thesequence of FIG. 172 (SEQ ID NO: 306). The transmembrane domains havebeen tentatively identified as extending from about amino acid position8 to about amino acid position 30 and from about amino acid position 109to about amino acid position 130 in the PRO1558 amino acid sequence(FIG. 172, SEQ ID NO: 306).

[1932] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 26 to about 262, inclusive of FIG. 172 (SEQ ID NO: 306), or (b)the complement of the DNA of (a).

[1933] Another embodiment is directed to fragments of a PRO1558polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 171 (SEQ ID NO: 305).

[1934] In another embodiment, the invention provides isolated PRO1558polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1935] In a specific aspect, the invention provides isolated nativesequence PRO1558 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 26 to about 262 ofFIG. 172 (SEQ ID NO: 306

[1936] In another aspect, the invention concerns an isolated PRO1558polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 26 to about 262, inclusive of FIG. 17(SEQ ID NO: 306

[1937] In a further aspect, the invention concerns an isolated PRO1558polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 26 to about 262, inclusive of FIG. 17(SEQ ID NO: 306

[1938] In yet another aspect, the invention concerns an isolated PRO1558polypeptide, comprising the sequence of amino acid residues 1 or about26 to about 262, inclusive of FIG. 172 (SEQ ID NO: 306), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1558antibody. Preferably, the PRO1558 fragment retains a qualitativebiological activity of a native PRO1558 polypeptide.

[1939] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1558 polypeptide havingthe sequence of amino acid residues from about 1 or about 26 to about262, inclusive of FIG. 172 (SEQ ID NO: 306), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1940] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1558 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1558 antibody.

[1941] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1558 polypeptide bycontacting the native PRO1558 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1942] In a still further embodiment, the inventionconcerns acomposition comprising a PRO1558 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1943] 87. PRO1604

[1944] A cDNA clone (DNA71286-1687) has been identified that encodes anovel polypeptide having homology to hepatoma-derived growth factor(HDGF) designated in the present application as “PRO1604”.

[1945] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1604 polypeptide.

[1946] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1604 polypeptide having the sequence of aminoacid residues from 1 or about 14 to about 671, inclusive of FIG. 174(SEQ ID NO: 308), or (b) the complement of the DNA molecule of (a).

[1947] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1604 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 104 andabout 2077, inclusive, of FIG. 173 (SEQ ID NO: 307). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[1948] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203357 (DNA71286-1687), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203357 (DNA71286-1687).

[1949] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 14 to about 671, inclusive of FIG. 174(SEQ ID NO: 308), or the complement of the DNA of (a).

[1950] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1604 polypeptide having the sequence of amino acid residues fromabout 14 to about 671, inclusive of FIG. 174 (SEQ ID NO: 308), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[1951] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1604 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 13 in the sequence of FIG. 174 (SEQ ID NO: 308).

[1952] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 14to about 671, inclusive of FIG. 174 (SEQ ID NO: 308), or (b) thecomplement of the DNA of (a).

[1953] Another embodiment is directed to fragments of a PRO1604polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[1954] In another embodiment, the invention provides isolated PRO1604polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1955] In a specific aspect, the invention provides isolated nativesequence PRO1604 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 14 to 671 of FIG. 174 (SEQ ID NO:308).

[1956] In another aspect, the invention concerns an isolated PRO1604polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues14 to about 671, inclusive of FIG. 174 (SEQ ID NO: 308).

[1957] In a further aspect, the invention concerns an isolated PRO1604polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 14 to671 of FIG. 174 (SEQ ID NO: 308).

[1958] In yet another aspect, the invention concerns an isolated PRO1604polypeptide, comprising the sequence of amino acid residues 14 to about671, inclusive of FIG. 174 (SEQ ID NO: 308), or a fragment thereofsufficient to provide a binding site for an anti-PRO1604 antibody.Preferably, the PRO1604 fragment retains a qualitative biologicalactivity of a native PRO1604 polypeptide.

[1959] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1604 polypeptide havingthe sequence of amino acid residues from about 14 to about 671,inclusive of FIG. 174 (SEQ ID NO: 308), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1960] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1604 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1604 antibody.

[1961] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1604 polypeptide, bycontacting the native PRO1604 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1962] In a still further embodiment, the invention concerns acomposition comprising a PRO1604 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1963] 88. PRO1491

[1964] A cDNA clone (DNA71883-1660) has been identified, having homologyto nucleic acid encoding a collapsin protein, that encodes a novelpolypeptide, designated in the present application as “PRO1491”.

[1965] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1491 polypeptide.

[1966] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1491 polypeptide having the sequence of aminoacid residues from about 1 or about 37 to about 777, inclusive of FIG.176 (SEQ ID NO: 310), or (b) the complement of the DNA molecule of (a).

[1967] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1491 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 107 orabout 215 and about 2437, inclusive, of FIG. 175 (SEQ ID NO: 309).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1968] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203475 (DNA71883-1660) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203475 (DNA71883-1660).

[1969] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 37 to about 777, inclusive of FIG. 176(SEQ ID NO: 310), or (b) the complement of the DNA of (a).

[1970] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 1,670 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1491 polypeptide having the sequence of aminoacid residues from 1 or about 37 to about 777, inclusive of FIG. 176(SEQ ID NO: 310), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[1971] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1491 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 36 in the sequence of FIG.176 (SEQ ID NO: 310).

[1972] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 37 to about 777, inclusive of FIG. 176 (SEQ ID NO: 310), or (b)the complement of the DNA of (a).

[1973] Another embodiment is directed to fragments of a PRO1491polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 175 (SEQ ID NO: 309).

[1974] In another embodiment, the invention provides isolated PRO1491polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[1975] In a specific aspect, the invention provides isolated nativesequence PRO1491 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 37 to about 777 ofFIG. 176 (SEQ ID NO: 310).

[1976] In another aspect, the invention concerns an isolated PRO1491polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 37 to about 777, inclusive of FIG. 176 (SEQ ID NO: 310).

[1977] In a further aspect, the invention concerns an isolated PRO1491polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 37 to about 777, inclusive of FIG. 176 (SEQ ID NO: 310).

[1978] In yet another aspect, the invention concerns an isolated PRO1491polypeptide, comprising the sequence of amino acid residues 1 or about37 to about 777, inclusive of FIG. 176 (SEQ ID NO: 310), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1491antibody. Preferably, the PRO1491 fragment retains a qualitativebiological activity of a native PRO1491 polypeptide.

[1979] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1491 polypeptide havingthe sequence of amino acid residues from about 1 or about 37 to about777, inclusive of FIG. 176 (SEQ ID NO: 310), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[1980] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1491 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1491 antibody.

[1981] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1491 polypeptide bycontacting the native PRO1491 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[1982] In a still further embodiment, the invention concerns acomposition comprising a PRO1491 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[1983] 89. PRO1431

[1984] A cDNA clone (DNA73401-1633) has been identified having a domainwith homology to SH3 that encodes a novel polypeptide, which has beendesignated in the present application as “PRO1431”.

[1985] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1431 polypeptide.

[1986] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1431 polypeptide having the sequence of aminoacid residues from about 1 to about 370, inclusive of FIG. 178 (SEQ IDNO: 315) or (b) the complement of the DNA molecule of (a).

[1987] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1431 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between residues 1 to about 1335and about 1560 to about 3934, inclusive, of FIG. 177 (SEQ ID NO: 314).Preferably, hybridization occurs under stringent hybridization and washconditions.

[1988] In a further aspect, the invention concerns (a) an isolatednucleic acid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203273 (DNA73401-1633) or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203273 (DNA73401-1633).

[1989] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 370, inclusive, of FIG. 178(SEQ ID NO: 315), or the complement of the DNA of (a).

[1990] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 15 nucleotides that is produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1431 polypeptide having the sequence of aminoacid residues from about 1 to about 370, inclusive, of FIG. 178 (SEQ IDNO: 315), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[1991] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 370, inclusive, of FIG. 178 (SEQ ID NO: 315), inclusive, ofFIG. 178 (SEQ ID NO: 315).

[1992] In another embodiment, the invention provides isolated PRO1431polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[1993] In a specific aspect, the invention provides isolated nativesequence PRO1431 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 370, inclusive, of FIG. 178 (SEQID NO: 315).

[1994] In another aspect, the invention concerns an isolated PRO1431polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 370, inclusive, of FIG. 178 (SEQ ID NO: 315).

[1995] In a further aspect, the invention concerns an isolated PRO1431polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to370 of FIG. 178 (SEQ ID NO: 315).

[1996] In yet another aspect, the invention concerns an isolated PRO1431or PRO1432 polypeptide, comprising the sequence of amino acid residues 1to about 370, inclusive, or FIG. 178 (SEQ ID NO: 315), inclusive, ofFIG. 178 (SEQ ID NO: 315), or a fragment thereof sufficient to provide abinding site for an anti-PRO1431 antibody. Preferably, the PRO1431fragment retains a qualitative biological activity of a native PRO1431polypeptide.

[1997] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1431 polypeptide havingthe sequence of amino acid residues from about 1 to about 370,inclusive, of FIG. 178 (SEQ ID NO: 315), inclusive, of FIG. 178 (SEQ IDNO: 315), or (b) the complement of the DNA molecule of (a), and if thetest DNA molecule has at least about an 80% sequence identity,preferably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), (ii) culturing a host cellcomprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[1998] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1431 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1431 antibody.

[1999] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1431 polypeptide, bycontacting the native PRO1431 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2000] In a still further embodiment, the invention concerns acomposition comprising a PRO1431 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2001] 90. PRO1563

[2002] A cDNA clone (DNA73492-1671) has been identified, having homologyto nucleic acid encoding ADAMTS-1 that encodes a novel polypeptide,designated in the present application as “PRO1563”.

[2003] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1563 polypeptide.

[2004] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1563 polypeptide having the sequence of aminoacid residues from about 1 or about 49 to about 837, inclusive of FIG.180 (SEQ ID NO: 317), or (b) the complement of the DNA molecule of (a).

[2005] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1563 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 419 orabout 563 and about 2929, inclusive, of FIGS. 179A-B (SEQ ID NO: 316).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2006] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203324 (DNA73492-1671) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203324 (DNA73492-1671).

[2007] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 49 to about 837, inclusive of FIG. 180(SEQ ID NO: 317), or (b) the complement of the DNA of (a).

[2008] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1563 polypeptide having the sequence of aminoacid residues from 1 or about 49 to about 837, inclusive of FIG. 180(SEQ ID NO: 317), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2009] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1563 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 48 in the sequence of FIG.180 (SEQ ID NO: 317).

[2010] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 49 to about 837, inclusive of FIG. 180 (SEQ ID NO: 317), or (b)the complement of the DNA of (a).

[2011] Another embodiment is directed to fragments of a PRO1563polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIGS. 179A-B (SEQ ID NO:316).

[2012] In another embodiment, the invention provides isolated PRO1563polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2013] In a specific aspect, the invention provides isolated nativesequence PRO1563 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 49 to about 837 ofFIG. 180 (SEQ ID NO: 317).

[2014] In another aspect, the invention concerns an isolated PRO1563polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 49 to about 837, inclusive of FIG. 180 (SEQ ID NO: 317).

[2015] In a further aspect, the invention concerns an isolated PRO1563polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 49 to about 837, inclusive of FIG. 180 (SEQ ID NO: 317).

[2016] In yet another aspect, the invention concerns an isolated PRO1563polypeptide, comprising the sequence of amino acid residues 1 or about49 to about 837, inclusive of FIG. 180 (SEQ ID NO: 317), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1563antibody. Preferably, the PRO1563 fragment retains a qualitativebiological activity of a native PRO1563 polypeptide.

[2017] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1563 polypeptide havingthe sequence of amino acid residues from about 1 or about 49 to about837, inclusive of FIG. 180 (SEQ ID NO: 317), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2018] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1563 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1563 antibody.

[2019] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1563 polypeptide bycontacting the native PRO1563 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2020] In a still further embodiment, the invention concerns acomposition comprising a PRO1563 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2021] 91. PRO1565

[2022] A cDNA clone (DNA73727-1673) has been identified, having homologyto nucleic acid encoding a chondromodulin protein that encodes a novelpolypeptide, designated in the present application as “PRO1565”.

[2023] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1565 polypeptide.

[2024] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1565 polypeptide having the sequence of aminoacid residues from about 1 or about 41 to about 317, inclusive of FIG.182 (SEQ ID NO: 322), or (b) the complement of the DNA molecule of (a).

[2025] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1565 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 59 orabout 179 and about 1009, inclusive, of FIG. 181 (SEQ ID NO: 321).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2026] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203459 (DNA73727-1673) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203459 (DNA73727-1673).

[2027] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 41 to about 317, inclusive of FIG. 182(SEQ ID NO: 322), or (b) the complement of the DNA of (a).

[2028] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 410 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1565 polypeptide having the sequence of aminoacid residues from 1 or about 41 to about 317, inclusive of FIG. 182(SEQ ID NO: 322), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2029] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1565 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 40 in thesequence of FIG. 182 (SEQ ID NO: 322). The transmembrane domain has beententatively identified as extending from about amino acid position 25 toabout amino acid position 47 in the PRO1565 amino acid sequence (FIG.182, SEQ ID NO: 322).

[2030] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 41 to about 317, inclusive of FIG. 182 (SEQ ID NO: 322), or (b)the complement of the DNA of (a).

[2031] Another embodiment is directed to fragments of a PRO1565polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 181 (SEQ ID NO: 321).

[2032] In another embodiment, the invention provides isolated PRO1565polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2033] In a specific aspect, the invention provides isolated nativesequence PRO1565 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 41 to about 317 ofFIG. 182 (SEQ ID NO: 322).

[2034] In another aspect, the invention concerns an isolated PRO1565polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 41 to about 317, inclusive of FIG. 182 (SEQ ID NO: 322).

[2035] In a further aspect, the invention concerns an isolated PRO1565polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 41 to about 317, inclusive of FIG. 182 (SEQ ID NO: 322).

[2036] In yet another aspect, the inventionconcerns an isolated PRO1565polypeptide, comprising the sequence of amino acid residues 1 or about41 to about 317, inclusive of FIG. 182 (SEQ ID NO: 322), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1565antibody. Preferably, the PRO1565 fragment retains a qualitativebiological activity of a native PRO1565 polypeptide.

[2037] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1565 polypeptide havingthe sequence of amino acid residues from about 1 or about 41 to about317, inclusive of FIG. 182 (SEQ ID NO: 322), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2038] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1565 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1565 antibody.

[2039] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1565 polypeptide bycontacting the native PRO1565 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2040] In a still further embodiment, the invention concerns acomposition comprising a PRO1565polypeptide, or an agonist or antagonistas hereinabove defined, in combination with a pharmaceuticallyacceptable carrier.

[2041] 92. PRO1571

[2042] A cDNA clone (DNA73730-1679) has been identified, having homologyto nucleic acid encoding the clostridium perfringens enterotoxinreceptor (CPE-R) that encodes a novel polypeptide, designated in thepresent application as “PRO1571”.

[2043] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1571 polypeptide.

[2044] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1571 polypeptide having the sequence of aminoacid residues from about 1 or about 22 to about 239, inclusive of FIG.184 (SEQ ID NO: 324), or (b) the complement of the DNA molecule of (a).

[2045] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1571 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 90 orabout 153 and about 806, inclusive, of FIG. 183 (SEQ ID NO: 323).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2046] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203320 (DNA73730-1679) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203320 (DNA73730-1679).

[2047] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 22 to about 239, inclusive of FIG. 184(SEQ ID NO: 324), or (b) the complement of the DNA of (a).

[2048] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 910 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1571 polypeptide having the sequence of aminoacid residues from 1 or about 22 to about 239, inclusive of FIG. 184(SEQ ID NO: 324), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2049] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1571 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 21 in thesequence of FIG. 184 (SEQ ID NO: 324). The transmembrane domains havebeen tentatively identified as extending from about amino acid position82 to about amino acid position 103, from about amino acid position 115to about amino acid position 141 and from about amino acid position 160to about amino acid position 182 in the PRO1571 amino acid sequence(FIG. 184, SEQ ID NO: 324).

[2050] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 22 to about 239, inclusive of FIG. 184 (SEQ ID NO: 324), or (b)the complement of the DNA of (a).

[2051] Another embodiment is directed to fragments of a PRO1571polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 183 (SEQ ID NO: 323).

[2052] In another embodiment, the invention provides isolated PRO1571polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2053] In a specific aspect, the invention provides isolated nativesequence PRO1571 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 22 to about 239 ofFIG. 184 (SEQ ID NO: 324).

[2054] In another aspect, the invention concerns an isolated PRO1571polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 22 to about 239, inclusive of FIG. 184 (SEQ ID NO: 324).

[2055] In a further aspect, the invention concerns an isolated PRO1571polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 22 to about 239, inclusive of FIG. 184 (SEQ ID NO: 324).

[2056] In yet another aspect, the invention concerns an isolated PRO1571polypeptide, comprising the sequence of amino acid residues 1 or about22 to about 239, inclusive of FIG. 184 (SEQ ID NO: 324), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1571antibody. Preferably, the PRO1571 fragment retains a qualitativebiological activity of a native PRO1571 polypeptide.

[2057] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1571 polypeptide havingthe sequence of amino acid residues from about 1 or about 22 to about239, inclusive of FIG. 184 (SEQ ID NO: 324), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2058] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1571 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1571 antibody.

[2059] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1571 polypeptide bycontacting the native PRO1571 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2060] In a still further embodiment, the inventionconcerns acomposition comprising a PRO1571 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2061] 93. PRO1572

[2062] A cDNA clone (DNA73734-1680) has been identified that encodes anovel polypeptide having sequence identity with CPE-R and designated inthe present application as “PRO1572.”

[2063] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1572 polypeptide.

[2064] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1572 polypeptide having the sequence of aminoacid residues from 1 or about 24 to about 261, inclusive of FIG. 186(SEQ ID NO: 326), or (b) the complement of the DNA molecule of (a).

[2065] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1572 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 159 andabout 872, inclusive, of FIG. 185 (SEQ ID NO: 325). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2066] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203363 (DNA73734-1680), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203363 (DNA73734-1680).

[2067] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 24 to about 261, inclusive of FIG. 186(SEQ ID NO: 326), or the complement of the DNA of (a).

[2068] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1572 polypeptide having the sequence of amino acid residues fromabout 24 to about 261, inclusive of FIG. 186 (SEQ ID NO: 326), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2069] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1572 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 23 in thesequence of FIG. 186 (SEQ ID NO: 326). The transmembrane domains havebeen tentatively identified as approximately at about 81-100, 121-141and 173-194 in the PRO1572 amino acid sequence (FIG. 186, SEQ ID NO:326).

[2070] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 24to about 261, inclusive of FIG. 186 (SEQ ID NO: 326), or (b) thecomplement of the DNA of (a).

[2071] Another embodiment is directed to fragments of a PRO1572polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2072] In another embodiment, the invention provides isolated PRO1572polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2073] In a specific aspect, the invention provides isolated nativesequence PRO1572 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 24 through 261 of FIG. 186 (SEQ ID NO:326).

[2074] In another aspect, the invention concerns an isolated PRO1572polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues24 to about 261, inclusive of FIG. 186 (SEQ ID NO: 326).

[2075] In a further aspect, the invention concerns an isolated PRO1572polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 24through 261 of FIG. 186 (SEQ ID NO: 326).

[2076] In yet another aspect, the invention concerns an isolated PRO1572polypeptide, comprising the sequence of amino acid residues 24 to about261, inclusive of FIG. 186 (SEQ ID NO: 326), or a fragment thereofsufficient to provide a binding site for an anti-PRO1572 antibody.Preferably, the PRO1572 fragment retains a qualitative biologicalactivity of a native PRO1572 polypeptide.

[2077] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1572 polypeptide havingthe sequence of amino acid residues from about 24 to about 261,inclusive of FIG. 186 (SEQ ID NO: 326), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2078] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1572 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1572 antibody.

[2079] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1572 polypeptide, bycontacting the native PRO1572 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2080] In a still further embodiment, the invention concerns acomposition comprising a PRO1572 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2081] 94. PRO1573

[2082] A cDNA clone (DNA73735-1681) has been identified that encodes anovel polypeptide having sequence identity with CPE-R and designated inthe present application as “PRO1573”.

[2083] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1573 polypeptide.

[2084] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1573 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 225, inclusive of FIG. 188(SEQ ID NO: 328), or (b) the complement of the DNA molecule of (a).

[2085] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1573 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 148 andabout 771, inclusive, of FIG. 187 (SEQ ID NO: 327). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2086] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203356 (DNA73735-1681), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203356 (DNA73735-1681).

[2087] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 18 to about 225, inclusive of FIG. 188(SEQ ID NO: 328), or the complement of the DNA of (a).

[2088] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1573 polypeptide having the sequence of amino acid residues fromabout 18 to about 225, inclusive of FIG. 188 (SEQ ID NO: 328), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2089] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1573 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 17 in thesequence of FIG. 188 (SEQ ID NO: 328). The transmembrane domains havebeen tentatively identified as at approximately 82-101, 118-145 and164-188 in the PRO1573 amino acid sequence (FIG. 188, SEQ ID NO: 328).

[2090] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 18to about 225, inclusive of FIG. 188 (SEQ ID NO: 328), or (b) thecomplement of the DNA of (a).

[2091] Another embodiment is directed to fragments of a PRO1573polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2092] In another embodiment, the invention provides isolated PRO1573polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2093] In a specific aspect, the invention provides isolated nativesequence PRO1573 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 18 through 225 of FIG. 188 (SEQ ID NO:328).

[2094] In another aspect, the invention concerns an isolated PRO1573polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues18 to about 225, inclusive of FIG. 188 (SEQ ID NO: 328).

[2095] In a further aspect, the invention concerns an isolated PRO1573polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 18through 225 of FIG. 188 (SEQ ID NO: 328).

[2096] In yet another aspect, the invention concerns an isolated PRO1573polypeptide, comprising the sequence of amino acid residues 18 to about225, inclusive of FIG. 188 (SEQ ID NO: 328), or a fragment thereofsufficient to provide a binding site for an anti-PRO1573 antibody.Preferably, the PRO1573 fragment retains a qualitative biologicalactivity of a native PRO1573 polypeptide.

[2097] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1573 polypeptide havingthe sequence of amino acid residues from about 18 to about 225,inclusive of FIG. 188 (SEQ ID NO: 328), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2098] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1573 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1573 antibody.

[2099] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1573 polypeptide, bycontacting the native PRO1573 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2100] In a still further embodiment, the invention concerns acomposition comprising a PRO1573 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2101] 95. PRO1488

[2102] A cDNA clone (DNA73736-1657) has been identified that encodes anovel polypeptide having homology to Clostridium perfringens enterotoxinreceptor (CPE-R), designated in the present application as “PRO1488”.

[2103] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1488 polypeptide.

[2104] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1488 polypeptide having the sequence of aminoacid residues from about 1 to about 220, inclusive of FIG. 190 (SEQ IDNO: 330), or (b) the complement of the DNA molecule of (a).

[2105] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1488 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 6 and about665, inclusive, of FIG. 189 (SEQ ID NO: 329). Preferably, hybridizationoccurs under stringent hybridization and wash conditions.

[2106] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203466 (DNA73736-1657), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203466 (DNA73736-1657).

[2107] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 220, inclusive of FIG. 190(SEQ ID NO: 330), or the complement of the DNA of (a).

[2108] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1488 polypeptide having the sequence of amino acid residues fromabout 1 to about 220, inclusive of FIG. 190 (SEQ ID NO: 330), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2109] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1488 polypeptide, with orwithout the initiating methionine, and its soluble variants (i.e.transmembrane domains deleted or inactivated), or is complementary tosuch encoding nucleic acid molecule. Transmembrane domains has beententatively identified as being located at about amino acid positions8-30, 82-102, 121-140, and 166-186 in the PRO1488 amino acid sequence(FIG. 190, SEQ ID NO: 330).

[2110] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 220, inclusive of FIG. 190 (SEQ ID NO: 330), or (b) thecomplement of the DNA of (a).

[2111] Another embodiment is directed to fragments of a PRO1488polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2112] In another embodiment, the invention provides isolated PRO1488polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2113] In a specific aspect, the invention provides isolated nativesequence PRO1488 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 220 of FIG. 190 (SEQ ID NO: 330).

[2114] In another aspect, the invention concerns an isolated PRO1488polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 220, inclusive of FIG. 190 (SEQ ID NO: 330).

[2115] In a further aspect, the invention concerns an isolated PRO1488polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to220 of FIG. 190 (SEQ ID NO: 330).

[2116] In yet another aspect, the invention concerns an isolated PRO1488polypeptide, comprising the sequence of amino acid residues 1 to about220, inclusive of FIG. 190 (SEQ ID NO: 330), or a fragment thereofsufficient to provide a binding site for an anti-PRO1488 antibody.Preferably, the PRO1488 fragment retains a qualitative biologicalactivity of a native PRO1488 polypeptide.

[2117] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1488 polypeptide havingthe sequence of amino acid residues from about 1 to about 220, inclusiveof FIG. 190 (SEQ ID NO: 330), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2118] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1488 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1488 antibody.

[2119] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1488 polypeptide, bycontacting the native PRO1488 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2120] In a still further embodiment, the invention concerns acomposition comprising a PRO1488 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2121] 96. PRO1489

[2122] A cDNA clone (DNA73737-1658) has been identified, having homologyto nucleic acid encoding the clostridium perfringens enterotoxinreceptor (CPE-R) that encodes a novel polypeptide, designated in thepresent application as “PRO1489”.

[2123] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1489 polypeptide.

[2124] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1489 polypeptide having the sequence of aminoacid residues from about 1 to about 173, inclusive of FIG. 192 (SEQ IDNO: 332), or (b) the complement of the DNA molecule of (a).

[2125] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1489 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 264 andabout 782, inclusive, of FIG. 191 (SEQ ID NO: 331). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2126] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203412 (DNA73737-1658) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203412 (DNA73737-1658).

[2127] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 to about 173, inclusive of FIG. 192 (SEQ ID NO:332), or (b) the complement of the DNA of (a).

[2128] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 25 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1489 polypeptide having the sequence of amino acidresidues from 1 to about 173, inclusive of FIG. 192 (SEQ ID NO: 332), or(b) the complement of the DNA molecule of (a), and, if the DNA moleculehas at least about an 80% sequence identity, prefereably at least aboutan 85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2129] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1489 polypeptide, with orwithout the initiating methionine, and its soluble, i.e., transmembranedomain deleted or inactivated variants, or is complementary to suchencoding nucleic acid molecule. The transmembrane domains have beententatively identified as extending from about amino acid position 31 toabout amino acid position 51, from about amino acid position 71 to aboutamino acid position 90 and from about amino acid position 112 to aboutamino acid position 133 in the PRO1489 amino acid sequence (FIG. 192,SEQ ID NO: 332).

[2130] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 173, inclusive of FIG. 192 (SEQ ID NO: 332), or (b) thecomplement of the DNA of (a).

[2131] Another embodiment is directed to fragments of a PRO1489polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 191 (SEQ ID NO: 331).

[2132] In another embodiment, the invention provides isolated PRO1489polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2133] In a specific aspect, the invention provides isolated nativesequence PRO1489 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 to about 173 of FIG. 192 (SEQID NO: 332).

[2134] In another aspect, the invention concerns an isolated PRO1489polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 173, inclusive of FIG. 192 (SEQ ID NO: 332).

[2135] In a further aspect, the invention concerns an isolated PRO1489polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 toabout 173, inclusive of FIG. 192 (SEQ ID NO: 332).

[2136] In yet another aspect, the invention concerns an isolated PRO1489polypeptide, comprising the sequence of amino acid residues 1 to about173, inclusive of FIG. 192 (SEQ ID NO: 332), or a fragment thereofsufficient to provide a binding site for an anti-PRO1489 antibody.Preferably, the PRO1489 fragment retains a qualitative biologicalactivity of a native PRO1489 polypeptide.

[2137] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1489 polypeptide havingthe sequence of amino acid residues from about 1 to about 173, inclusiveof FIG. 192 (SEQ ID NO: 332), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2138] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1489 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1489 antibody.

[2139] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1489 polypeptide bycontacting the native PRO1489 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2140] In a still further embodiment, the invention concerns acomposition comprising a PRO1489 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2141] 97. PRO1474

[2142] A cDNA clone (DNA73739-1645) has been identified that encodes anovel polypeptide having sequence identity with ovomucoid and designatedin the present application as “PRO1474.”

[2143] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1474 polypeptide.

[2144] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1474 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 85, inclusive of FIG. 194 (SEQID NO: 334), or (b) the complement of the DNA molecule of (a).

[2145] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1474 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 102 andabout 299, inclusive, of FIG. 193 (SEQ ID NO: 333). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2146] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203270 (DNA73739-1645), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203270 (DNA73739-1645).

[2147] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 20 to about 85, inclusive of FIG. 194(SEQ ID NO: 334), or the complement of the DNA of (a).

[2148] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1474 polypeptide having the sequence of amino acid residues fromabout 20 to about 85, inclusive of FIG. 194 (SEQ ID NO: 334), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2149] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 20to about 85, inclusive of FIG. 194 (SEQ ID NO: 334), or (b) thecomplement of the DNA of (a).

[2150] Another embodiment is directed to fragments of a PRO1474polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2151] In another embodiment, the invention provides isolated PRO1474polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2152] In a specific aspect, the invention provides isolated nativesequence PRO1474 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 20 through 85 of FIG. 194 (SEQ ID NO:334).

[2153] In another aspect, the invention concerns an isolated PRO1474polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues20 to about 85, inclusive of FIG. 194 (SEQ ID NO: 334).

[2154] In a further aspect, the invention concerns an isolated PRO1474polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 20through 85 of FIG. 194 (SEQ ID NO: 334).

[2155] In yet another aspect, the invention concerns an isolated PRO1474polypeptide, comprising the sequence of amino acid residues 20 to about85, inclusive of FIG. 194 (SEQ ID NO: 334), or a fragment thereofsufficient to provide a binding site for an anti-PRO1474 antibody.Preferably, the PRO1474 fragment retains a qualitative biologicalactivity of a native PRO1474 polypeptide.

[2156] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1474 polypeptide havingthe sequence of amino acid residues from about 20 to about 85, inclusiveof FIG. 194 (SEQ ID NO: 334), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2157] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1474 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1474 antibody.

[2158] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1474 polypeptide, bycontacting the native PRO1474 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2159] In a still further embodiment, the invention concerns acomposition comprising a PRO1474 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2160] 98. PRO1508

[2161] A cDNA clone (DNA73742-1662) has been identified that encodes anovel secreted polypeptide and designated in the present application as“PRO1508.”

[2162] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1508 polypeptide.

[2163] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1508 polypeptide having the sequence of aminoacid residues from 1 or about 31 to about 148, inclusive of FIG. 196(SEQ ID NO: 336), or (b) the complement of the DNA molecule of (a).

[2164] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1508 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 160 andabout 513, inclusive, of FIG. 195 (SEQ ID NO: 335). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2165] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203316 (DNA73742-1662), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203316 (DNA73742-1662).

[2166] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 31 to about 148, inclusive of FIG. 196(SEQ ID NO: 336), or the complement of the DNA of (a).

[2167] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1508 polypeptide having the sequence of amino acid residues fromabout 31 to about 148, inclusive of FIG. 196 (SEQ ID NO: 336), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2168] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1508 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 30 in the sequence of FIG.196 (SEQ ID NO: 336).

[2169] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 31to about 148, inclusive of FIG. 196 (SEQ ID NO: 336), or (b) thecomplement of the DNA of (a).

[2170] Another embodiment is directed to fragments of a PRO1508polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2171] In another embodiment, the invention provides isolated PRO1508polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2172] In a specific aspect, the invention provides isolated nativesequence PRO1508 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 31 to 148 of FIG. 196 (SEQ ID NO:336).

[2173] In another aspect, the invention concerns an isolated PRO1508polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues31 to about 148, inclusive of FIG. 196 (SEQ ID NO: 336).

[2174] In a further aspect, the invention concerns an isolated PRO1508polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 31 to148 of FIG. 196 (SEQ ID NO: 336).

[2175] In yet another aspect, the invention concerns an isolated PRO1508polypeptide, comprising the sequence of amino acid residues 31 to about148, inclusive of FIG. 196 (SEQ ID NO: 336), or a fragment thereofsufficient to provide a binding site for an anti-PRO1508 antibody.Preferably, the PRO1508 fragment retains a qualitative biologicalactivity of a native PRO1508 polypeptide.

[2176] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1508 polypeptide havingthe sequence of amino acid residues from about 31 to about 148,inclusive of FIG. 196 (SEQ ID NO: 336), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2177] 99. PRO1555

[2178] A cDNA clone (DNA73744-1665) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1555”.

[2179] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1555 polypeptide.

[2180] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1555 polypeptide having the sequence of aminoacid residues from 1 or about 32 to about 246, inclusive of FIG. 198(SEQ ID NO: 338), or (b) the complement of the DNA molecule of (a).

[2181] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1555 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 83 andabout 827, inclusive, of FIG. 197 (SEQ ID NO: 337). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2182] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203322 (DNA73744-1665), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203322 (DNA73744-1665).

[2183] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 32 to about 246, inclusive of FIG. 198(SEQ ID NO: 338), or the complement of the DNA of (a).

[2184] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1555 polypeptide having the sequence of amino acid residues fromabout 32 to about 246, inclusive of FIG. 198 (SEQ ID NO: 338), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2185] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1555 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domains deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position31 in the sequence of FIG. 198 (SEQ ID NO: 338). Two transmembranedomains have been tentatively identified as extending from about aminoacid position 1 to about amino acid position 32, and from about aminoacid position 195 through about amino acid position 217, in the PRO1555amino acid sequence (FIG. 198, SEQ ID NO: 338).

[2186] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 32to about 246, inclusive of FIG. 198 (SEQ ID NO: 338), or (b) thecomplement of the DNA of (a).

[2187] Another embodiment is directed to fragments of a PRO1555polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2188] In another embodiment, the invention provides isolated PRO1555polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2189] In a specific aspect, the invention provides isolated nativesequence PRO1555 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 32 to 246 of FIG. 198 (SEQ ID NO:338).

[2190] In another aspect, the invention concerns an isolated PRO1555polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues32 to about 246, inclusive of FIG. 198 (SEQ ID NO: 338).

[2191] In a further aspect, the invention concerns an isolated PRO1555polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 32 to246 of FIG. 198 (SEQ ID NO: 338).

[2192] In yet another aspect, the invention concerns an isolated PRO1555polypeptide, comprising the sequence of amino acid residues 32 to about246, inclusive of FIG. 198 (SEQ ID NO: 338), or a fragment thereofsufficient to provide a binding site for an anti-PRO1555 antibody.Preferably, the PRO1555 fragment retains a qualitative biologicalactivity of a native PRO1555 polypeptide.

[2193] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1555 polypeptide havingthe sequence of amino acid residues from about 32 to about 246,inclusive of FIG. 198 (SEQ ID NO: 338), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2194] 100. PRO1485

[2195] A cDNA clone (DNA73746-1654) has been identified that encodes anovel polypeptide having sequence identity with lysozyme, and moreparticularly, lysozyme C precursor, and designated in the presentapplication as “PRO1485.”

[2196] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1485 polypeptide.

[2197] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1485 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 148, inclusive of FIG. 200(SEQ ID NO: 340), or (b) the complement of the DNA molecule of (a).

[2198] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1485 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 205 andabout 594, inclusive, of FIG. 199 (SEQ ID NO: 339). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2199] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203411 (DNA73746-1654), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203411 (DNA73746-1654).

[2200] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 148, inclusive of FIG. 200(SEQ ID NO: 340), or the complement of the DNA of (a).

[2201] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1485 polypeptide having the sequence of amino acid residues fromabout 19 to about 148, inclusive of FIG. 200 (SEQ ID NO: 340), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2202] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 148, inclusive of FIG. 200 (SEQ ID NO: 340), or (b) thecomplement of the DNA of (a).

[2203] Another embodiment is directed to fragments of a PRO1485polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2204] In another embodiment, the invention provides isolated PRO1485polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2205] In a specific aspect, the invention provides isolated nativesequence PRO1485 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 through 148 of FIG. 200 (SEQ ID NO:340).

[2206] In another aspect, the invention concerns an isolated PRO1485polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 148, inclusive of FIG. 200 (SEQ ID NO: 340).

[2207] In a further aspect, the invention concerns an isolated PRO1485polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19through 148 of FIG. 200 (SEQ ID NO: 340).

[2208] In yet another aspect, the invention concerns an isolated PRO1485polypeptide, comprising the sequence of amino acid residues 19 to about148, inclusive of FIG. 200 (SEQ ID NO: 340), or a fragment thereofsufficient to provide a binding site for an anti-PRO1485 antibody.Preferably, the PRO1485 fragment retains a qualitative biologicalactivity of a native PRO1485 polypeptide.

[2209] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1485 polypeptide havingthe sequence of amino acid residues from about 19 to about 148,inclusive of FIG. 200 (SEQ ID NO: 340), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2210] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1485 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1485 antibody.

[2211] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1485 polypeptide, bycontacting the native PRO1485 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2212] In a still further embodiment, the invention concerns acomposition comprising a PRO1485 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2213] 101. PRO1564

[2214] A cDNA clone (DNA73760-1672) has been identified, having homologyto nucleic acid encoding an N-acetylgalactosaminyltransferase proteinthat encodes a novel polypeptide, designated in the present applicationas “PRO1564”.

[2215] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1564 polypeptide.

[2216] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1564 polypeptide having the sequence of aminoacid residues from about 1 or about 29 to about 639, inclusive of FIG.202 (SEQ ID NO: 347), or (b) the complement of the DNA molecule of (a).

[2217] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1564 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 462 orabout 546 and about 2378, inclusive, of FIG. 201 (SEQ ID NO: 346).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2218] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203314 (DNA73760-1672) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203314 (DNA73760-1672).

[2219] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 29 to about 639, inclusive of FIG. 202(SEQ ID NO: 347), or (b) the complement of the DNA of (a).

[2220] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1564 polypeptide having the sequence of aminoacid residues from 1 or about 29 to about 639, inclusive of FIG. 202(SEQ ID NO: 347), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2221] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1564 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 28 in thesequence of FIG. 202 (SEQ ID NO: 347). The transmembrane domain has beententatively identified as extending from about amino acid position 11 toabout amino acid position 36 in the PRO1564 amino acid sequence (FIG.202, SEQ ID NO: 347).

[2222] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 29 to about 639, inclusive of FIG. 202 (SEQ ID NO: 347), or (b)the complement of the DNA of (a).

[2223] Another embodiment is directed to fragments of a PRO1564polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 201 (SEQ ID NO: 346).

[2224] In another embodiment, the invention provides isolated PRO1564polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2225] In a specific aspect, the invention provides isolated nativesequence PRO1564 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 29 to about 639 ofFIG. 202 (SEQ ID NO: 347).

[2226] In another aspect, the invention concerns an isolated PRO1564polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 29 to about 639, inclusive of FIG. 202 (SEQ ID NO: 347).

[2227] In a further aspect, the invention concerns an isolated PRO1564polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 29 to about 639, inclusive of FIG. 202 (SEQ ID NO: 347).

[2228] In yet another aspect, the invention concerns an isolated PRO1564polypeptide, comprising the sequence of amino acid residues 1 or about29 to about 639, inclusive of FIG. 202 (SEQ ID NO: 347), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1564antibody. Preferably, the PRO1564 fragment retains a qualitativebiological activity of a native PRO1564 polypeptide.

[2229] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1564 polypeptide havingthe sequence of amino acid residues from about 1 or about 29 to about639, inclusive of FIG. 202 (SEQ ID NO: 347), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2230] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1564 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1564 antibody.

[2231] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1564 polypeptide bycontacting the native PRO1564 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2232] In a still further embodiment, the invention concerns acomposition comprising a PRO1564 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2233] 102. PRO1755

[2234] A cDNA clone (DNA76396-1698) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1755”.

[2235] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1755 polypeptide.

[2236] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1755 polypeptide having the sequence of aminoacid residues from 1 or about 32 to about 276, inclusive of FIG. 204(SEQ ID NO: 352), or (b) the complement of the DNA molecule of (a).

[2237] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1755 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 151 andabout 885, inclusive, of FIG. 203 (SEQ ID NO: 351). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2238] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203471 (DNA76396-1698), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203471 (DNA76396-1698).

[2239] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 32 to about 276, inclusive of FIG. 204(SEQ ID NO: 352), or the complement of the DNA of (a).

[2240] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1755 polypeptide having the sequence of amino acid residues fromabout 32 to about 276, inclusive of FIG. 204 (SEQ ID NO: 352), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2241] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1755 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domain deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position31 in the sequence of FIG. 204 (SEQ ID NO: 352). The transmembranedomain has been tentatively identified as extending from about aminoacid position 178 to about amino acid position 198 in the PRO1755 aminoacid sequence (FIG. 204, SEQ ID NO: 352).

[2242] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 32to about 276, inclusive of FIG. 204 (SEQ ID NO: 352), or (b) thecomplement of the DNA of (a).

[2243] Another embodiment is directed to fragments of a PRO1755polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2244] In another embodiment, the invention provides isolated PRO1755polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2245] In a specific aspect, the invention provides isolated nativesequence PRO1755 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 32 to 276 of FIG. 204 (SEQ ID NO:352).

[2246] In another aspect, the invention concerns an isolated PRO1755polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues32 to about 276, inclusive of FIG. 204 (SEQ ID NO: 352).

[2247] In a further aspect, the invention concerns an isolated PRO1755polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 32 to276 of FIG. 204 (SEQ ID NO: 352).

[2248] In yet another aspect, the invention concerns an isolated PRO1755polypeptide, comprising the sequence of amino acid residues 32 to about276, inclusive of FIG. 204 (SEQ ID NO: 352), or a fragment thereofsufficient to provide a binding site for an anti-PRO1755 antibody.Preferably, the PRO1755 fragment retains a qualitative biologicalactivity of a native PRO1755 polypeptide.

[2249] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1755 polypeptide havingthe sequence of amino acid residues from about 32 to about 276,inclusive of FIG. 204 (SEQ ID NO: 352), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2250] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1755 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1755 antibody.

[2251] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1755 polypeptide, bycontacting the native PRO1755 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2252] In a still further embodiment, the invention concerns acomposition comprising a PRO1755 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2253] 103. PRO1757

[2254] A cDNA clone (DNA76398-1699) has been identified that encodes anovel transmembrane polypeptide, designated in the present applicationas “PRO1757”.

[2255] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1757 polypeptide.

[2256] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1757 polypeptide having the sequence of aminoacid residues from about 1 or about 20 to about 121, inclusive of FIG.206 (SEQ ID NO: 354), or (b) the complement of the DNA molecule of (a).

[2257] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1757 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 59 orabout 116 and about 121, inclusive, of FIG. 205 (SEQ ID NO: 353).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2258] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203474 (DNA76398-1699) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203474 (DNA76398-1699).

[2259] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 20 to about 121, inclusive of FIG. 206(SEQ ID NO: 354), or (b) the complement of the DNA of (a).

[2260] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 125 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1757 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 121, inclusive of FIG. 206(SEQ ID NO: 354), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2261] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1757 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 19 in thesequence of FIG. 206 (SEQ ID NO: 354). The transmembrane domain has beententatively identified as extending from about amino acid position 91 toabout amino acid position 110 in the PRO1757 amino acid sequence (FIG.206, SEQ ID NO: 354).

[2262] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 20 to about 121, inclusive of FIG. 206 (SEQ ID NO: 354), or (b)the complement of the DNA of (a).

[2263] Another embodiment is directed to fragments of a PRO1757polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 205 (SEQ ID NO: 353).

[2264] In another embodiment, the invention provides isolated PRO1757polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2265] In a specific aspect, the invention provides isolated nativesequence PRO1757 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 20 to about 121 ofFIG. 206 (SEQ ID NO: 354).

[2266] In another aspect, the invention concerns an isolated PRO1757polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 20 to about 121, inclusive of FIG. 206 (SEQ ID NO: 354).

[2267] In a further aspect, the invention concerns an isolated PRO1757polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 20 to about 121, inclusive of FIG. 206 (SEQ ID NO: 354).

[2268] In yet another aspect, the invention concerns an isolated PRO1757polypeptide, comprising the sequence of amino acid residues 1 or about20 to about 121, inclusive of FIG. 206 (SEQ ID NO: 354), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1757antibody. Preferably, the PRO1757 fragment retains a qualitativebiological activity of a native PRO1757 polypeptide.

[2269] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1757 polypeptide havingthe sequence of amino acid residues from about 1 or about 20 to about121, inclusive of FIG. 206 (SEQ ID NO: 354), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2270] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1757 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1757 antibody.

[2271] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1757 polypeptide bycontacting the native PRO1757 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2272] In a still further embodiment, the invention concerns acomposition comprising a PRO1757 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2273] 104. PRO1758

[2274] A cDNA clone (DNA76399-1700) has been identified that encodes anovel secreted polypeptide designated in the present application as“PRO1758”.

[2275] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1758 polypeptide.

[2276] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1758 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 157, inclusive of FIG. 208(SEQ ID NO: 356), or (b) the complement of the DNA molecule of (a).

[2277] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1758 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 123 andabout 548, inclusive, of FIG. 207 (SEQ ID NO: 355). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2278] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203472 (DNA76399-1700), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203472 (DNA76399-1700).

[2279] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 16 to about 157, inclusive of FIG. 208(SEQ ID NO: 356), or the complement of the DNA of (a).

[2280] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1758 polypeptide having the sequence of amino acid residues fromabout 16 to about 157, inclusive of FIG. 208 (SEQ ID NO: 356), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2281] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1758 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 15 in the sequence of FIG. 208 (SEQ ID NO: 356).

[2282] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 16to about 157, inclusive of FIG. 208 (SEQ ID NO: 356), or (b) thecomplement of the DNA of (a).

[2283] Another embodiment is directed to fragments of a PRO1758polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2284] In another embodiment, the invention provides isolated PRO1758polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2285] In a specific aspect, the invention provides isolated nativesequence PRO1758 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 16 to 157 of FIG. 208 (SEQ ID NO:356).

[2286] In another aspect, the invention concerns an isolated PRO1758polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues16 to about 157, inclusive of FIG. 208 (SEQ ID NO: 356).

[2287] In a further aspect, the invention concerns an isolated PRO1758polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 16 to157 of FIG. 208 (SEQ ID NO: 356).

[2288] In yet another aspect, the invention concerns an isolated PRO1758polypeptide, comprising the sequence of amino acid residues 16 to about157, inclusive of FIG. 208 (SEQ ID NO: 356), or a fragment thereofsufficient to provide a binding site for an anti-PRO1758 antibody.Preferably, the PRO1758 fragment retains a qualitative biologicalactivity of a native PRO1758 polypeptide.

[2289] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1758 polypeptide havingthe sequence of amino acid residues from about 16 to about 157,inclusive of FIG. 208 (SEQ ID NO: 356), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2290] 105. PRO1575

[2291] A cDNA clone (DNA76401-1683) has been identified that encodes anovel polypeptide having homology to protein disulfide isomerase anddesignated in the present application as “PRO1575.”

[2292] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1575 polypeptide.

[2293] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1575 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 273, inclusive of FIG. 210(SEQ ID NO: 358), or (b) the complement of the DNA molecule of (a).

[2294] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1575 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 82 andabout 840, inclusive, of FIG. 209 (SEQ ID NO: 357). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2295] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203360 (DNA76401-1683), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203360 (DNA76401-1683).

[2296] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 21 to about 273, inclusive of FIG. 210(SEQ ID NO: 358), or the complement of the DNA of (a).

[2297] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1575 polypeptide having the sequence of amino acid residues fromabout 21 to about 273, inclusive of FIG. 210 (SEQ ID NO: 358), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2298] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1575 polypeptide, its solublevariants, (i.e. transmembrane domain and/or signal peptide deleted orinactivated) or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 20 in thesequence of FIG. 210 (SEQ ID NO: 358). The transmembrane domain has beententatively identified as extending from about amino acid position 143to about amino acid position 162 in the PRO1575 amino acid sequence(FIG. 210, SEQ ID NO: 358).

[2299] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 21to about 273, inclusive of FIG. 210 (SEQ ID NO: 358), or (b) thecomplement of the DNA of (a).

[2300] Another embodiment is directed to fragments of a PRO1575polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2301] In another embodiment, the invention provides isolated PRO1575polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2302] In a specific aspect, the invention provides isolated nativesequence PRO1575 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 21 to 273 of FIG. 210 (SEQ ID NO:358).

[2303] In another aspect, the invention concerns an isolated PRO1575polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues21 to about 273, inclusive of FIG. 210 (SEQ ID NO: 358).

[2304] In a further aspect, the invention concerns an isolated PRO1575polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 21 to273 of FIG. 210 (SEQ ID NO: 358).

[2305] In yet another aspect, the invention concerns an isolated PRO1575polypeptide, comprising the sequence of amino acid residues 21 to about273, inclusive of FIG. 210 (SEQ ID NO: 358), or a fragment thereofsufficient to provide a binding site for an anti-PRO1575 antibody.Preferably, the PRO1575 fragment retains a qualitative biologicalactivity of a native PRO1575 polypeptide.

[2306] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1575 polypeptide havingthe sequence of amino acid residues from about 21 to about 273,inclusive of FIG. 210 (SEQ ID NO: 358), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2307] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1575 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1575 antibody.

[2308] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1575 polypeptide, bycontacting the native PRO1575 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2309] In a still further embodiment, the invention concerns acomposition comprising a PRO1575 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2310] 106. PRO1787

[2311] A cDNA clone (DNA76510-2504) has been identified that encodes anovel polypeptide having sequence identity with myelin p0 and designatedin the present application as “PRO1787.”

[2312] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1787 polypeptide.

[2313] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1787 polypeptide having the sequence of aminoacid residues from 1 or about 38 to about 269, inclusive of FIG. 212(SEQ ID NO: 364), or (b) the complement of the DNA molecule of (a).

[2314] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1787 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 274 andabout 969, inclusive, of FIG. 211 (SEQ ID NO: 363). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2315] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203477 (DNA76510-2504), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203477 (DNA76510-2504).

[2316] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 38 to about 269, inclusive of FIG. 212(SEQ ID NO: 364), or the complement of the DNA of (a).

[2317] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1787 polypeptide having the sequence of amino acid residues fromabout 38 to about 269, inclusive of FIG. 212 (SEQ ID NO: 364), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2318] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1787 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 37 in thesequence of FIG. 212 (SEQ ID NO: 364). The transmembrane domain has beententatively identified as extending from about amino acid position 161through about amino acid position 183 in the PRO1787 amino acid sequence(FIG. 212, SEQ ID NO: 364).

[2319] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 38to about 269, inclusive of FIG. 212 (SEQ ID NO: 364), or (b) thecomplement of the DNA of (a).

[2320] Another embodiment is directed to fragments of a PRO1787polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2321] In another embodiment, the invention provides isolated PRO1787polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2322] In a specific aspect, the invention provides isolated nativesequence PRO1787 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 38 through 269 of FIG. 212 (SEQ ID NO:364).

[2323] In another aspect, the invention concerns an isolated PRO1787polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues38 to about 269, inclusive of FIG. 212 (SEQ ID NO: 364).

[2324] In a further aspect, the invention concerns an isolated PRO1787polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 38through 269 of FIG. 212 (SEQ ID NO: 364).

[2325] In yet another aspect, the invention concerns an isolated PRO1787polypeptide, comprising the sequence of amino acid residues 38 to about269, inclusive of FIG. 212 (SEQ ID NO: 364), or a fragment thereofsufficient to provide a binding site for an anti-PRO1787 antibody.Preferably, the PRO1787 fragment retains a qualitative biologicalactivity of a native PRO1787 polypeptide.

[2326] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1787 polypeptide havingthe sequence of amino acid residues from about 38 to about 269,inclusive of FIG. 212 (SEQ ID NO: 364), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2327] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1787 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1787 antibody.

[2328] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1787 polypeptide, bycontacting the native PRO1787 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2329] In a still further embodiment, the invention concerns acomposition comprising a PRO1787 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2330] 107. PRO1781

[2331] A cDNA clone (DNA76522-2500) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1781”.

[2332] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1781 polypeptide.

[2333] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1781 polypeptide having the sequence of aminoacid residues from 1 or about 20 to about 373, inclusive of FIG. 214(SEQ ID NO: 366), or (b) the complement of the DNA molecule of (a).

[2334] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1781 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 78 andabout 1139, inclusive, of FIG. 213 (SEQ ID NO: 365). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2335] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203469 (DNA76522-2500), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203469 (DNA76522-2500).

[2336] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 20 to about 373, inclusive of FIG. 214(SEQ ID NO: 366), or the complement of the DNA of (a).

[2337] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1781 polypeptide having the sequence of amino acid residues fromabout 20 to about 373, inclusive of FIG. 214 (SEQ ID NO: 36), or (b) thecomplement of the DNA molecule of (a), and, if the DNA molecule has atleast about an 80% sequence identity, preferably at least about an 85%sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2338] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1781 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domain deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position19 in the sequence of FIG. 214 (SEQ ID NO: 366). The transmembranedomain has been tentatively identified as extending from about aminoacid position 39 to about amino acid position 60 in the PRO1781 aminoacid sequence (FIG. 214, SEQ ID NO: 366).

[2339] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 20to about 373, inclusive of FIG. 214 (SEQ ID NO: 366), or (b) thecomplement of the DNA of (a).

[2340] Another embodiment is directed to fragments of a PRO1781polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2341] In another embodiment, the invention provides isolated PRO1781polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2342] In a specific aspect, the invention provides isolated nativesequence PRO1781 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 20 to 373 of FIG. 214 (SEQ ID NO:366).

[2343] In another aspect, the invention concerns an isolated PRO1781polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues20 to about 373, inclusive of FIG. 214 (SEQ ID NO: 366).

[2344] In a further aspect, the invention concerns an isolated PRO1781polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 20 to373 of FIG. 214 (SEQ ID NO: 366).

[2345] In yet another aspect, the inventionconcerns an isolated PRO1781polypeptide, comprising the sequence of amino acid residues 20 to about373, inclusive of FIG. 214 (SEQ ID NO: 366), or a fragment thereofsufficient to provide a binding site for an anti-PRO1781 antibody.Preferably, the PRO1781 fragment retains a qualitative biologicalactivity of a native PRO1781 polypeptide.

[2346] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1781 polypeptide havingthe sequence of amino acid residues from about 20 to about 373,inclusive of FIG. 214 (SEQ ID NO: 366), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2347] 108. PRO1556

[2348] A cDNA clone (DNA76529-1666) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1556”.

[2349] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1556 polypeptide.

[2350] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1556 polypeptide having the sequence of aminoacid residues from 1 or about 25 to about 269, inclusive of FIG. 216(SEQ ID NO: 372), or (b) the complement of the DNA molecule of (a).

[2351] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1556 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 160 andabout 891, inclusive, of FIG. 215 (SEQ ID NO: 371). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2352] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203315 (DNA76529-1666), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203315 (DNA76529-1666).

[2353] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 25 to about 269, inclusive of FIG. 216(SEQ ID NO: 372), or the complement of the DNA of (a).

[2354] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1556 polypeptide having the sequence of amino acid residues fromabout 25 to about 269, inclusive of FIG. 216 (SEQ ID NO: 372), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2355] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1556 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble variants (i.e. transmembrane domains deleted orinactivated), or is complementary to such encoding nucleic acidmolecule. The signal peptide has been tentatively identified asextending from amino acid position 1 through about amino acid position24 in the sequence of FIG. 216 (SEQ ID NO: 372). Two transmembranedomains have been tentatively identified as extending from about aminoacid position 11 to about amino acid position 25 and from about aminoacid position 226 to about amino acid position 243 in the PRO1556 aminoacid sequence (FIG. 216, SEQ ID NO: 372).

[2356] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 25to about 269, inclusive of FIG. 216 (SEQ ID NO: 372), or (b) thecomplement of the DNA of (a).

[2357] Another embodiment is directed to fragments of a PRO1556polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2358] In another embodiment, the invention provides isolated PRO1556polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2359] In a specific aspect, the invention provides isolated nativesequence PRO1556 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 25 to 269 of FIG. 216 (SEQ ID NO:372).

[2360] In another aspect, the invention concerns an isolated PRO1556polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues25 to about 269, inclusive of FIG. 216 (SEQ ID NO: 372).

[2361] In a further aspect, the invention concerns an isolated PRO1556polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 25 to269 of FIG. 216 (SEQ ID NO: 372).

[2362] In yet another aspect, the invention concerns an isolated PRO1556polypeptide, comprising the sequence of amino acid residues 25 to about269, inclusive of FIG. 216 (SEQ ID NO: 372), or a fragment thereofsufficient to provide a binding site for an anti-PRO1556 antibody.Preferably, the PRO1556 fragment retains a qualitative biologicalactivity of a native PRO1556 polypeptide.

[2363] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1556 polypeptide havingthe sequence of amino acid residues from about 25 to about 269,inclusive of FIG. 216 (SEQ ID NO: 372), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2364] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1556 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1556 antibody.

[2365] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1556 polypeptide, bycontacting the native PRO1556 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2366] In a still further embodiment, the invention concerns acomposition comprising a PRO1556 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2367] 109. PRO1759

[2368] A cDNA clone (DNA76531-1701) has been identified that encodes anovel polypeptide having multiple transmembrane domains, designated inthe present application as “PRO1759.”

[2369] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1759 polypeptide.

[2370] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1759 polypeptide having the sequence of aminoacid residues from 1 or about 19 to about 450, inclusive of FIG. 218(SEQ ID NO: 374), or (b) the complement of the DNA molecule of (a).

[2371] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1759 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 179 andabout 1474, inclusive, of FIG. 217 (SEQ ID NO: 373). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2372] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203465 (DNA76531-1701), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203465 (DNA76531-1701).

[2373] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 19 to about 450, inclusive of FIG. 218(SEQ ID NO: 374), or the complement of the DNA of (a).

[2374] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1759 polypeptide having the sequence of amino acid residues fromabout 19 to about 450, inclusive of FIG. 218 (SEQ ID NO: 374), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2375] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1759 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domains deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 18 in thesequence of FIG. 218 (SEQ ID NO: 374). The transmembrane domains havebeen tentatively identified as being at about amino acids 1-19 (possiblya signal peptide), 41-55, 75-94, 127-143, 191-213, 249-270, 278-299,314-330, 343-359, 379-394, and 410-430 in the PRO1759 amino acidsequence (FIG. 218, SEQ ID NO: 374).

[2376] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 19to about 450, inclusive of FIG. 218 (SEQ ID NO: 374), or (b) thecomplement of the DNA of (a).

[2377] Another embodiment is directed to fragments of a PRO1759polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2378] In another embodiment, the invention provides isolated PRO1759polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2379] In a specific aspect, the invention provides isolated nativesequence PRO1759 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 19 through 450 of FIG. 218 (SEQ ID NO:374).

[2380] In another aspect, the invention concerns an isolated PRO1759polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues19 to about 450, inclusive of FIG. 218 (SEQ ID NO: 374).

[2381] In a further aspect, the invention concerns an isolated PRO1759polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 19through 450 of FIG. 218 (SEQ ID NO: 374).

[2382] In yet another aspect, the invention concerns an isolated PRO1759polypeptide, comprising the sequence of amino acid residues 19 to about450, inclusive of FIG. 218 (SEQ ID NO: 374), or a fragment thereofsufficient to provide a binding site for an anti-PRO1759 antibody.Preferably, the PRO1759 fragment retains a qualitative biologicalactivity of a native PRO1759 polypeptide.

[2383] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1759 polypeptide havingthe sequence of amino acid residues from about 19 to about 450,inclusive of FIG. 218 (SEQ ID NO: 374), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2384] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1759 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1759 antibody.

[2385] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1759 polypeptide, bycontacting the native PRO1759 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2386] In a still further embodiment, the invention concerns acomposition comprising a PRO1759 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2387] 110. PRO1760

[2388] A cDNA clone (DNA76532-1702) has been identified that encodes anovel secreted polypeptide, designated in the present application as“PRO1760.”

[2389] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1760 polypeptide.

[2390] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1760 polypeptide having the sequence of aminoacid residues from 1 or about 21 to about 188, inclusive of FIG. 220(SEQ ID NO: 376), or (b) the complement of the DNA molecule of (a).

[2391] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1760 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 120 andabout 623, inclusive, of FIG. 219 (SEQ ID NO: 375). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2392] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203473 (DNA76532-1702), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203473 (DNA76532-1702).

[2393] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 21 to about 188, inclusive of FIG. 220(SEQ ID NO: 376), or the complement of the DNA of (a).

[2394] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1760 polypeptide having the sequence of amino acid residues fromabout 21 to about 188, inclusive of FIG. 220 (SEQ ID NO: 376), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2395] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 21to about 188, inclusive of FIG. 220 (SEQ ID NO: 376), or (b) thecomplement of the DNA of (a).

[2396] Another embodiment is directed to fragments of a PRO1760polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2397] In another embodiment, the invention provides isolated PRO1760polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2398] In a specific aspect, the invention provides isolated nativesequence PRO1760 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 21 through 188 of FIG. 220 (SEQ ID NO:376).

[2399] In another aspect, the invention concerns an isolated PRO1760polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues21 to about 188, inclusive of FIG. 220 (SEQ ID NO: 376).

[2400] In a further aspect, the invention concerns an isolated PRO1760polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 21through 188 of FIG. 220 (SEQ ID NO: 376).

[2401] In yet another aspect, the invention concerns an isolated PRO1760polypeptide, comprising the sequence of amino acid residues 21 to about188, inclusive of FIG. 220 (SEQ ID NO: 376), or a fragment thereofsufficient to provide a binding site for an anti-PRO1760 antibody.Preferably, the PRO1760 fragment retains a qualitative biologicalactivity of a native PRO1760 polypeptide.

[2402] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1760 polypeptide havingthe sequence of amino acid residues from about 21 to about 188,inclusive of FIG. 220 (SEQ ID NO: 376), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2403] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1760 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1760 antibody.

[2404] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1760 polypeptide, bycontacting the native PRO1760 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2405] In a still further embodiment, the invention concerns acomposition comprising a PRO1760 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2406] 111. PRO1561

[2407] A cDNA clone (DNA76538-1670) has been identified, having homologyto nucleic acid encoding human phospholipase A2 protein that encodes anovel polypeptide, designated in the present application as “PRO1561”.

[2408] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1561 polypeptide.

[2409] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1561 polypeptide having the sequence of aminoacid residues from about 1 or about 18 to about 116, inclusive of FIG.222 (SEQ ID NO: 378), or (b) the complement of the DNA molecule of (a).

[2410] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1561 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 29 orabout 80 and about 376, inclusive, of FIG. 221 (SEQ ID NO: 377).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2411] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203313 (DNA76538-1670) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203313 (DNA76538-1670).

[2412] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 18 to about 116, inclusive of FIG. 222(SEQ ID NO: 378), or (b) the complement of the DNA of (a).

[2413] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 100 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1561 polypeptide having the sequence of aminoacid residues from 1 or about 18 to about 116, inclusive of FIG. 222(SEQ ID NO: 378), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2414] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1561 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 17 in thesequence of FIG. 222 (SEQ ID NO: 378). The transmembrane domain has beententatively identified as extending from about amino acid position 1 toabout amino acid position 24 in the PRO1561 amino acid sequence (FIG.222, SEQ ID NO: 378).

[2415] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 18 to about 116, inclusive of FIG. 222 (SEQ ID NO: 378), or (b)the complement of the DNA of (a).

[2416] Another embodiment is directed to fragments of a PRO1561polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 221 (SEQ ID NO: 377).

[2417] In another embodiment, the invention provides isolated PRO1561polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2418] In a specific aspect, the invention provides isolated nativesequence PRO1561 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 18 to about 116 ofFIG. 222 (SEQ ID NO: 378).

[2419] In another aspect, the invention concerns an isolated PRO1561polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 18 to about 116, inclusive of FIG. 222 (SEQ ID NO: 378).

[2420] In a further aspect, the invention concerns an isolated PRO1561polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 18 to about 116, inclusive of FIG. 222 (SEQ ID NO: 378).

[2421] In yet another aspect, the invention concerns an isolated PRO1561polypeptide, comprising the sequence of amino acid residues 1 or about18 to about 116, inclusive of FIG. 222 (SEQ ID NO: 378), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1561antibody. Preferably, the PRO1561 fragment retains a qualitativebiological activity of a native PRO1561 polypeptide.

[2422] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1561 polypeptide havingthe sequence of amino acid residues from about 1 or about 18 to about116, inclusive of FIG. 222 (SEQ ID NO: 378), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2423] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1561 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1561 antibody.

[2424] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1561 polypeptide bycontacting the native PRO1561 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2425] In a still further embodiment, the invention concerns acomposition comprising a PRO1561 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2426] 112. PRO1567

[2427] A cDNA clone (DNA76541-1675) has been identified that encodes anovel polypeptide having homology to the expression product of the colonspecific gene, CSG6, and is designated in the present application as“PRO1567”.

[2428] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1567 polypeptide.

[2429] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1567 polypeptide having the sequence of aminoacid residues from 1 or about 23 to about 178, inclusive of FIG. 224(SEQ ID NO: 383), or (b) the complement of the DNA molecule of (a).

[2430] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1567 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 175 andabout 642, inclusive, of FIG. 223 (SEQ ID NO: 382). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2431] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203409 (DNA76541-1675), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203409 (DNA76541-1675).

[2432] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 23 to about 178, inclusive of FIG. 224(SEQ ID NO: 383), or the complement of the DNA of (a).

[2433] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1567 polypeptide having the sequence of amino acid residues fromabout 23 to about 178, inclusive of FIG. 224 (SEQ ID NO: 383), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2434] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1567 polypeptide, with orwithout the N-terminal signal sequence, or is complementary to suchencoding nucleic acid molecule. The signal peptide has been tentativelyidentified as extending from amino acid position 1 through about aminoacid position 22 in the sequence of FIG. 224 (SEQ ID NO: 383).

[2435] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 23to about 178, inclusive of FIG. 224 (SEQ ID NO: 383), or (b) thecomplement of the DNA of (a).

[2436] Another embodiment is directed to fragments of a PRO1567polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2437] In another embodiment, the invention provides isolated PRO1567polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2438] In a specific aspect, the invention provides isolated nativesequence PRO1567 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 23 to 178 of FIG. 224 (SEQ ID NO:383).

[2439] In another aspect, the invention concerns an isolated PRO1567polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues23 to about 178, inclusive of FIG. 224 (SEQ ID NO: 383).

[2440] In a further aspect, the invention concerns an isolated PRO1567polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 23 to178 of FIG. 224 (SEQ ID NO: 383).

[2441] In yet another aspect, the invention concerns an isolated PRO1567polypeptide, comprising the sequence of amino acid residues 23 to about178, inclusive of FIG. 224 (SEQ ID NO: 383), or a fragment thereofsufficient to provide a binding site for an anti-PRO1567 antibody.Preferably, the PRO1567 fragment retains a qualitative biologicalactivity of a native PRO1567 polypeptide.

[2442] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1567 polypeptide havingthe sequence of amino acid residues from about 23 to about 178,inclusive of FIG. 224 (SEQ ID NO: 383), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2443] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1567 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1567 antibody.

[2444] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1567 polypeptide, bycontacting the native PRO1567 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2445] In a still further embodiment, the invention concerns acomposition comprising a PRO1567 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2446] 113. PRO1693

[2447] A cDNA clone (DNA77301-1708) has been identified, having homologyto nucleic acid encoding an insulin-like growth factor binding proteinthat encodes a novel polypeptide, designated in the present applicationas “PRO1693”.

[2448] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1693 polypeptide.

[2449] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1693 polypeptide having the sequence of aminoacid residues from about 1 or about 34 to about 513, inclusive of FIG.226 (SEQ ID NO: 385), or (b) the complement of the DNA molecule of (a).

[2450] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1693 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 508 orabout 607 and about 2046, inclusive, of FIG. 225 (SEQ ID NO: 384).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2451] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203407 (DNA77301-1708) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203407 (DNA77301-1708).

[2452] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 34 to about 513, inclusive of FIG. 226(SEQ ID NO: 385), or (b) the complement of the DNA of (a).

[2453] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 175 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1693 polypeptide having the sequence of aminoacid residues from 1 or about 34 to about 513, inclusive of FIG. 226(SEQ ID NO: 385), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2454] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1693 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 33 in thesequence of FIG. 226 (SEQ ID NO: 385). The transmembrane domain has beententatively identified as extending from about amino acid position 420to about amino acid position 442 in the PRO1693 amino acid sequence(FIG. 226, SEQ ID NO: 385).

[2455] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 34 to about 513, inclusive of FIG. 226 (SEQ ID NO: 385), or (b)the complement of the DNA of (a).

[2456] Another embodiment is directed to fragments of a PRO1693polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 225 (SEQ ID NO: 384).

[2457] In another embodiment, the invention provides isolated PRO1693polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2458] In a specific aspect, the invention provides isolated nativesequence PRO1693 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 34 to about 513 ofFIG. 226 (SEQ ID NO: 385).

[2459] In another aspect, the invention concerns an isolated PRO1693polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 34 to about 513, inclusive of FIG. 226 (SEQ ID NO: 385).

[2460] In a further aspect, the invention concerns an isolated PRO1693polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 34 to about 513, inclusive of FIG. 226 (SEQ ID NO: 385).

[2461] In yet another aspect, the invention concerns an isolated PRO1693polypeptide, comprising the sequence of amino acid residues 1 or about34 to about 513, inclusive of FIG. 226 (SEQ ID NO: 385), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1693antibody. Preferably, the PRO1693 fragment retains a qualitativebiological activity of a native PRO1693 polypeptide.

[2462] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1693 polypeptide havingthe sequence of amino acid residues from about 1 or about 34 to about513, inclusive of FIG. 226 (SEQ ID NO: 385), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2463] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1693 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1693 antibody.

[2464] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1693 polypeptide bycontacting the native PRO1693 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2465] In a still further embodiment, the invention concerns acomposition comprising a PRO1693 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2466] 114. PRO1784

[2467] A cDNA clone (DNA77303-2502) has been identified that encodes anovel transmembrane polypeptide designated in the present application as“PRO1784.”

[2468] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1784 polypeptide.

[2469] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1784 polypeptide having the sequence of aminoacid residues from 1 or about 30 to about 146, inclusive of FIG. 228(SEQ ID NO: 390), or (b) the complement of the DNA molecule of (a).

[2470] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1784 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 155 andabout 505, inclusive, of FIG. 227 (SEQ ID NO: 389). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2471] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203479 (DNA77303-2502), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203479 (DNA77303-2502).

[2472] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 30 to about 146, inclusive of FIG. 228(SEQ ID NO: 390), or the complement of the DNA of (a).

[2473] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1784 polypeptide having the sequence of amino acid residues fromabout 30 to about 146, inclusive of FIG. 228 (SEQ ID NO: 390), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2474] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1784 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 29 in thesequence of FIG. 228 (SEQ ID NO: 390). The transmembrane domain has beententatively identified as extending from about amino acid position 52through about amino acid position 70 in the PRO1784 amino acid sequence(FIG. 228, SEQ ID NO: 390).

[2475] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 30to about 146, inclusive of FIG. 228 (SEQ ID NO: 390), or (b) thecomplement of the DNA of (a).

[2476] Another embodiment is directed to fragments of a PRO1784polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2477] In another embodiment, the invention provides isolated PRO1784polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2478] In a specific aspect, the invention provides isolated nativesequence PRO1784 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 30 through 146 of FIG. 228 (SEQ ID NO:390).

[2479] In another aspect, the invention concerns an isolated PRO1784polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues30 to about 146, inclusive of FIG. 228 (SEQ ID NO: 390).

[2480] In a further aspect, the invention concerns an isolated PRO1784polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 30through 146 of FIG. 228 (SEQ ID NO: 390).

[2481] In yet another aspect, the invention concerns an isolated PRO1784polypeptide, comprising the sequence of amino acid residues 30 to about146, inclusive of FIG. 228 (SEQ ID NO: 390), or a fragment thereofsufficient to provide a binding site for an anti-PRO1784 antibody.Preferably, the PRO1784 fragment retains a qualitative biologicalactivity of a native PRO1784 polypeptide.

[2482] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1784 polypeptide havingthe sequence of amino acid residues from about 30 to about 146,inclusive of FIG. 228 (SEQ ID NO: 390), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2483] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1784 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1784 antibody.

[2484] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1784 polypeptide, bycontacting the native PRO1784 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2485] In a still further embodiment, the invention concerns acomposition comprising a PRO1784 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2486] 115. PRO1605

[2487] A cDNA clone (DNA77648-1688) has been identified, having homologyto nucleic acid encoding a glycosyltransferase protein that encodes anovel polypeptide, designated in the present application as “PRO1605”.

[2488] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1605 polypeptide.

[2489] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1605 polypeptide having the sequence of aminoacid residues from about 1 or about 27 to about 140, inclusive of FIG.230 (SEQ ID NO: 395), or (b) the complement of the DNA molecule of (a).

[2490] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1605 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 425 orabout 503 and about 844, inclusive, of FIG. 229 (SEQ ID NO: 394).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2491] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit 203408 (DNA77648-1688) or (b) the complement of the nucleic acidmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203408 (DNA77648-1688).

[2492] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 27 to about 140, inclusive of FIG. 230(SEQ ID NO: 395), or (b) the complement of the DNA of (a).

[2493] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 380 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1605 polypeptide having the sequence of aminoacid residues from 1 or about 27 to about 140, inclusive of FIG. 230(SEQ ID NO: 395), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2494] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1605 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 26 in the sequence of FIG.230 (SEQ ID NO: 395).

[2495] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 27 to about 140, inclusive of FIG. 230 (SEQ ID NO: 395), or (b)the complement of the DNA of (a).

[2496] Another embodiment is directed to fragments of a PRO1605polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 229 (SEQ ID NO: 394).

[2497] In another embodiment, the invention provides isolated PRO1605polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2498] In a specific aspect, the invention provides isolated nativesequence PRO1605 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 27 to about 140 ofFIG. 230 (SEQ ID NO: 395).

[2499] In another aspect, the invention concerns an isolated PRO1605polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 27 to about 140, inclusive of FIG. 230 (SEQ ID NO: 395).

[2500] In a further aspect, the invention concerns an isolated PRO1605polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 27 to about 140, inclusive of FIG. 230 (SEQ ID NO: 395).

[2501] In yet another aspect, the invention concerns an isolated PRO1605polypeptide, comprising the sequence of amino acid residues 1 or about27 to about 140, inclusive of FIG. 230 (SEQ ID NO: 395), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1605antibody. Preferably, the PRO1605 fragment retains a qualitativebiological activity of a native PRO1605 polypeptide.

[2502] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1605 polypeptide havingthe sequence of amino acid residues from about 1 or about 27 to about140, inclusive of FIG. 230 (SEQ ID NO: 395), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2503] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1605 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1605 antibody.

[2504] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1605 polypeptide bycontacting the native PRO1605 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2505] In a still further embodiment, the invention concerns acomposition comprising a PRO1605 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2506] 116. PRO1788

[2507] A cDNA clone (DNA77652-2505) has been identified that encodes anovel polypeptide having homology to leucine-rich repeat proteins anddesignated in the present application as “PRO1788.”

[2508] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1788 polypeptide.

[2509] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1788 polypeptide having the sequence of aminoacid residues from 1 or about 17 to about 353, inclusive of FIG. 232(SEQ ID NO: 397), or (b) the complement of the DNA molecule of (a).

[2510] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1788 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 112 andabout 1122, inclusive, of FIG. 231 (SEQ ID NO: 396). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2511] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203480 (DNA77652-2505), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203480 (DNA77652-2505).

[2512] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 17 to about 353, inclusive of FIG. 232(SEQ ID NO: 397), or the complement of the DNA of (a).

[2513] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1788 polypeptide having the sequence of amino acid residues fromabout 17 to about 353, inclusive of FIG. 232 (SEQ ID NO: 397), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2514] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1788 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e. transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromamino acid position 1 through about amino acid position 16 in thesequence of FIG. 232 (SEQ ID NO: 397). Transmembrane domains have beententatively identified as extending from about amino acid position 215through about amino acid position 232 and about amino acid position 287through about amino acid position 304 in the PRO1788 amino acid sequence(FIG. 232, SEQ ID NO: 397).

[2515] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 17to about 353, inclusive of FIG. 232 (SEQ ID NO: 397), or (b) thecomplement of the DNA of (a).

[2516] Another embodiment is directed to fragments of a PRO1788polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2517] In another embodiment, the invention provides isolated PRO1788polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2518] In a specific aspect, the invention provides isolated nativesequence PRO1788 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 17 to 353 of FIG. 232 (SEQ ID NO:397).

[2519] In another aspect, the invention concerns an isolated PRO1788polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues17 to about 353, inclusive of FIG. 232 (SEQ ID NO: 397).

[2520] In a further aspect, the invention concerns an isolated PRO1788polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 17 to353 of FIG. 232 (SEQ ID NO: 397).

[2521] In yet another aspect, the invention concerns an isolated PRO1788polypeptide, comprising the sequence of amino acid residues 17 to about353, inclusive of FIG. 232 (SEQ ID NO: 397), or a fragment thereofsufficient to provide a binding site for an anti-PRO1788 antibody.Preferably, the PRO1788 fragment retains a qualitative biologicalactivity of a native PRO1788 polypeptide.

[2522] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1788 polypeptide havingthe sequence of amino acid residues from about 17 to about 353,inclusive of FIG. 232 (SEQ ID NO: 397), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2523] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1788 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1788 antibody.

[2524] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1788 polypeptide, bycontacting the native PRO1788 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2525] In a still further embodiment, the invention concerns acomposition comprising a PRO1788 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2526] 117. PRO1801

[2527] A cDNA clone (DNA83500-2506) has been identified, having homologyto nucleic acid encoding IL-19 polypeptide, that encodes a novelpolypeptide, designated in the present application as “PRO1801”.

[2528] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1801 polypeptide.

[2529] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1801 polypeptide having the sequence of aminoacid residues from about 1 or about 43 to about 261, inclusive of FIG.234 (SEQ ID NO: 402), or (b) the complement of the DNA molecule of (a).

[2530] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1801 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 109 orabout 235 and about 891, inclusive, of FIG. 233 (SEQ ID NO: 401).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2531] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203391 (DNA83500-2506) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203391 (DNA83500-2506).

[2532] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 43 to about 261, inclusive of FIG. 234(SEQ ID NO: 402), or (b) the complement of the DNA of (a).

[2533] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 30 nucleotides, usually at leastabout 50 nucleotides, more usually at least about 100 nucleotides andgenerally at least about 150 nucleotides and produced by hybridizing atest DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1801 polypeptide having the sequence of amino acidresidues from 1 or about 43 to about 261, inclusive of FIG. 234 (SEQ IDNO: 402), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, preferably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[2534] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1801 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 42 in the sequence of FIG.234 (SEQ ID NO: 402).

[2535] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 43 to about 261, inclusive of FIG. 234 (SEQ ID NO: 402), or (b)the complement of the DNA of (a).

[2536] Another embodiment is directed to fragments of a PRO1801polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 233 (SEQ ID NO: 401).

[2537] In another embodiment, the invention provides isolated PRO1801polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2538] In a specific aspect, the invention provides isolated nativesequence PRO1801 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 43 to about 261 ofFIG. 234 (SEQ ID NO: 402).

[2539] In another aspect, the invention concerns an isolated PRO1801polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 43 to about 261, inclusive of FIG. 234 (SEQ ID NO: 402).

[2540] In a further aspect, the invention concerns an isolated PRO1801polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 43 to about 261, inclusive of FIG. 234 (SEQ ID NO: 402).

[2541] In yet another aspect, the invention concerns an isolated PRO1801polypeptide, comprising the sequence of amino acid residues 1 or about43 to about 261, inclusive of FIG. 234 (SEQ ID NO: 402), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1801antibody. Preferably, the PRO1801 fragment retains a qualitativebiological activity of a native PRO1801 polypeptide.

[2542] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1801 polypeptide havingthe sequence of amino acid residues from about 1 or about 43 to about261, inclusive of FIG. 234 (SEQ ID NO: 402), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2543] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1801 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1801 antibody.

[2544] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1801 polypeptide bycontacting the native PRO1801 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2545] In a still further embodiment, the invention concerns acomposition comprising a PRO1801 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2546] Another embodiment of the present invention is directed to amethod of inhibiting the production of an inflammatory cytokine by acell capable of producing that inflammatory cytokine, wherein the methodcomprises the step of contacting the cell with a PRO1801 polypeptide,wherein the production of the inflammatory cytokine is inhibited. Thecell may be, for example, a T-cell, an NK cell or a macrophage and theinflammatory cytokine whose production is inhibited may be, for example,IL-1, IL-6, IFN-γ or TNF-α.

[2547] A further embodiment of the present invention is directed to amethod for the treatment of an individual in need of immunosuppression,wherein the method comprises the step of administering to the individualan immunosuppressive amount of a PRO1801 polypeptide. The individual inneed of immunosuppression may suffer from an autoimmune disease, such asrheumatoid arthritis, myasthenia gravis, insulin-dependent diabetesmellitus, systemic lupus erythematosus, thyroiditis or colitis, or fromseptic shock, endotoxic shock or any other type of disorder whereimmunosuppression is desired. The individual may also be one who hasreceived or is to receive a tissue transplant, where the method servesto inhibit rejection of the tissue transplant.

[2548] Other embodiments will become evident upon a reading of thepresent specification.

[2549] 118. UCP4

[2550] A cDNA clone (DNA77568-1626) has been identified, having certainhomologies to some known human uncoupling proteins, that encodes a novelpolypeptide, designated in the present application as “UCP4.”

[2551] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a UCP4 polypeptide.

[2552] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a UCP4 polypeptide having the sequence of amino acidresidues from about 1 to about 323, inclusive of FIG. 236 (SEQ ID NO:406), or (b) the complement of the DNA molecule of (a).

[2553] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a UCP4 polypeptide comprising DNA hybridizing tothe complement of the nucleic acid between about nucleotides 40 andabout 1011 inclusive, of FIG. 235 (SEQ ID NO: 405). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2554] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203134, or (b) the complement of the DNA molecule of (a). Ina preferred embodiment, the nucleic acid comprises a DNA encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203134. In a still further aspect, the invention concerns anisolated nucleic acid molecule comprising (a) DNA encoding a polypeptidehaving at least about 80% sequence identity, preferably at least about85% sequence identity, more preferably at least about 90% sequenceidentity, most preferably at least about 95% sequence identity to thesequence of amino acid residues from about 1 to about 323, inclusive ofFIG. 236 (SEQ ID NO: 406), or the complement of the DNA of (a).

[2555] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 323, inclusive of FIG. 236 (SEQ ID NO: 406), or (b) thecomplement of the DNA of (a).

[2556] Further embodiments of the invention are directed to fragments ofthe UCP4 coding sequence, which are sufficiently long to be used ashybridization probes. Preferably, such fragments contain at least about20 to about 80 consecutive bases included in the sequence of FIG. 235(SEQ ID NO: 405). Optionally, such fragments include the N-terminus orthe C-terminus of the sequence of FIG. 236 (SEQ ID NO: 406).

[2557] In another embodiment, the invention provides isolated UCP4polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2558] In a specific aspect, the invention provides isolated nativesequence UCP4 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 to 323 of FIG. 236 (SEQ ID NO: 406).

[2559] In another aspect, the invention concerns an isolated UCP4polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 323, inclusive of FIG. 236 (SEQ ID NO: 406).

[2560] In a further aspect, the invention concerns an isolated UCP4polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 to323 of FIG. 236 (SEQ ID NO: 406).

[2561] In yet another aspect, the invention concerns an isolated UCP4polypeptide, comprising the sequence of amino acid residues 1 to about323, inclusive of FIG. 236 (SEQ ID NO: 406), or a fragment thereofsufficient to, for instance, provide a binding site for an anti-UCP4antibody. Preferably, the UCP4 fragment retains at least one biologicalactivity of a native UCP4 polypeptide.

[2562] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a UCP4 polypeptide havingthe sequence of amino acid residues from about 1 to about 323, inclusiveof FIG. 236 (SEQ ID NO: 406), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2563] In yet another embodiment, the invention concerns agonists andantagonists of the native UCP4 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-UCP4 antibody.

[2564] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native UCP4 polypeptide, bycontacting the native UCP4 polypeptide with a candidate molecule andmonitoring the desired activity. The invention also provides therapeuticmethods and diagnostic methods using UCP4.

[2565] In a still further embodiment, the invention concerns acomposition comprising a UCP4 polypeptide, or an agonist or antagonistas hereinabove defined, in combination with a carrier.

[2566] 119. PRO193

[2567] A cDNA clone (DNA23322-1393) has been identified that encodes anovel multi-transmembrane polypeptide, designated in the presentapplication as “PRO193.”

[2568] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO193 polypeptide.

[2569] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO193 polypeptide having the sequence of amino acidresidues from about 1 to about 158, inclusive of FIG. 238 (SEQ ID NO:410), or (b) the complement of the DNA molecule of (a).

[2570] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO193 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 138 andabout 611, inclusive, of FIG. 237 (SEQ ID NO: 409). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2571] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No.203400 (DNA23322-1393), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203400 (DNA23322-1393).

[2572] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 1 to about 158, inclusive of FIG. 238(SEQ ID NO: 410), or the complement of the DNA of (a).

[2573] In a further aspect, the invention concerns an isolated nucleicacid molecule produced by hybridizing a test DNA molecule understringent conditions with (a) a DNA molecule encoding a PRO193polypeptide having the sequence of amino acid residues from about 1 toabout 158, inclusive of FIG. 238 (SEQ ID NO: 410), or (b) the complementof the DNA molecule of (a), and, if the DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b),isolating the test DNA molecule.

[2574] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO193 polypeptide in itssoluble form, i.e. transmembrane domain deleted or inactivated variants,or is complementary to such encoding nucleic acid molecule. Thetransmembrane domain has been tentatively identified as extending fromabout amino acid positions 23-42, 60-80, 97-117 and 128-148 in thePRO193 amino acid sequence (FIG. 238, SEQ ID NO: 410).

[2575] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1to about 158, inclusive of FIG. 238 (SEQ ID NO: 410), or (b) thecomplement of the DNA of (a).

[2576] In another embodiment, the invention provides isolated PRO193polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2577] In a specific aspect, the invention provides isolated nativesequence PRO193 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 1 through 158 of FIG. 238 (SEQ ID NO:410).

[2578] In another aspect, the invention concerns an isolated PRO193polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 to about 158, inclusive of FIG. 238 (SEQ ID NO: 410).

[2579] In a further aspect, the invention concerns an isolated PRO193polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1through 158 of FIG. 238 (SEQ ID NO: 410).

[2580] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO193 polypeptide havingthe sequence of amino acid residues from about 1 to about 158, inclusiveof FIG. 238 (SEQ ID NO: 410), or (b) the complement of the DNA moleculeof (a), and if the test DNA molecule has at least about an 80% sequenceidentity, preferably at least about an 85% sequence identity, morepreferably at least about a 90% sequence identity, most preferably atleast about a 95% sequence identity to (a) or (b), (ii) culturing a hostcell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2581] In yet another embodiment, the invention concerns agonists andantagonists of the a native PRO193 polypeptide. In a particularembodiment, the agonist or antagonist is an anti-PRO193 antibody.

[2582] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO193 polypeptide, bycontacting the native PRO193 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2583] In a still further embodiment, the invention concerns acomposition comprising a PRO193 polypeptide, or an agonist or antagonistas hereinabove defined, in combination with a pharmaceuticallyacceptable carrier.

[2584] 120. PRO1130

[2585] A cDNA clone (DNA59814-1486) has been identified, having homologyto nucleic acid encoding the human 2-19 protein that encodes a novelpolypeptide, designated in the present application as “PRO130”.

[2586] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1130 polypeptide.

[2587] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1 130 polypeptide having the sequence of aminoacid residues from about 1 or about 16 to about 224, inclusive of FIG.240 (SEQ ID NO: 415), or (b) the complement of the DNA molecule of (a).

[2588] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1130 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 312 orabout 357 and about 983, inclusive, of FIG. 239 (SEQ ID NO: 414).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2589] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203359 (DNA59814-1486) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203359 (DNA59814-1486).

[2590] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 16 to about 224, inclusive of FIG. 240(SEQ ID NO: 415), or (b) the complement of the DNA of (a).

[2591] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 10 nucleotides and produced by hybridizinga test DNA molecule under stringent conditions with (a) a DNA moleculeencoding a PRO1130 polypeptide having the sequence of amino acidresidues from 1 or about 16 to about 224, inclusive of FIG. 240 (SEQ IDNO: 415), or (b) the complement of the DNA molecule of (a), and, if theDNA molecule has at least about an 80% sequence identity, prefereably atleast about an 85% sequence identity, more preferably at least about a90% sequence identity, most preferably at least about a 95% sequenceidentity to (a) or (b), isolating the test DNA molecule.

[2592] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1130 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from about aminoacid position 1 to about amino acid position 15 in the sequence of FIG.240 (SEQ ID NO: 415).

[2593] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 16 to about 224, inclusive of FIG. 240 (SEQ ID NO: 415), or (b)the complement of the DNA of (a).

[2594] Another embodiment is directed to fragments of a PRO1 130polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 239 (SEQ ID NO: 414).

[2595] In another embodiment, the invention provides isolated PRO1130polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2596] In a specific aspect, the invention provides isolated nativesequence PRO1130 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 16 to about 224 ofFIG. 240 (SEQ ID NO: 415).

[2597] In another aspect, the invention concerns an isolated PRO1130polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 16 to about 224, inclusive of FIG. 240 (SEQ ID NO: 415).

[2598] In a further aspect, the invention concerns an isolated PRO1130polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 16 to about 224, inclusive of FIG. 240 (SEQ ID NO: 415).

[2599] In yet another aspect, the invention concerns an isolatedPRO1130polypeptide, comprising the sequence of amino acid residues 1 orabout 16 to about 224, inclusive of FIG. 240 (SEQ ID NO: 415), or afragment thereof sufficient to provide a binding site for ananti-PRO1130 antibody. Preferably, the PRO1130 fragment retains aqualitative biological activity of a native PRO1130 polypeptide.

[2600] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1130 polypeptide havingthe sequence of amino acid residues from about 1 or about 16 to about224, inclusive of FIG. 240 (SEQ ID NO: 415), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2601] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1130 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1130 antibody.

[2602] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1130 polypeptide bycontacting the native PRO1130 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2603] In a still further embodiment, the invention concerns acomposition comprising a PRO1130 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2604] 121. PRO1335

[2605] A cDNA clone (DNA62812-1594) has been identified, having homologyto nucleic acid encoding carbonic anhydrase that encodes a novelpolypeptide, designated in the present application as “PRO1335”.

[2606] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1335 polypeptide.

[2607] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1335 polypeptide having the sequence of aminoacid residues from about 1 or about 16 to about 337, inclusive of FIG.242 (SEQ ID NO: 423), or (b) the complement of the DNA molecule of (a).

[2608] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1335 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about nucleotides 271 orabout 316 and about 1281, inclusive, of FIG. 241 (SEQ ID NO: 422).Preferably, hybridization occurs under stringent hybridization and washconditions.

[2609] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203248 (DNA62812-1594) or (b) the complement of the nucleicacid molecule of (a). In a preferred embodiment, the nucleic acidcomprises a DNA encoding the same mature polypeptide encoded by thehuman protein cDNA in ATCC Deposit No. 203248 (DNA62812-1594).

[2610] In still a further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues 1 or about 16 to about 337, inclusive of FIG. 242(SEQ ID NO: 423), or (b) the complement of the DNA of (a).

[2611] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least 180 nucleotides and produced byhybridizing a test DNA molecule under stringent conditions with (a) aDNA molecule encoding a PRO1335 polypeptide having the sequence of aminoacid residues from 1 or about 16 to about 337, inclusive of FIG. 242(SEQ ID NO: 423), or (b) the complement of the DNA molecule of (a), and,if the DNA molecule has at least about an 80% sequence identity,prefereably at least about an 85% sequence identity, more preferably atleast about a 90% sequence identity, most preferably at least about a95% sequence identity to (a) or (b), isolating the test DNA molecule.

[2612] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1335 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,and its soluble, i.e., transmembrane domain deleted or inactivatedvariants, or is complementary to such encoding nucleic acid molecule.The signal peptide has been tentatively identified as extending fromabout amino acid position 1 to about amino acid position 15 in thesequence of FIG. 242 (SEQ ID NO: 423). The transmembrane domain has beententatively identified as extending from about amino acid position 291to about amino acid position 310 in the PRO1335 amino acid sequence(FIG. 242, SEQ ID NO: 423).

[2613] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 1or about 16 to about 337, inclusive of FIG. 242 (SEQ ID NO: 423), or (b)the complement of the DNA of (a).

[2614] Another embodiment is directed to fragments of a PRO1335polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length and mostpreferably from about 20 to about 40 nucleotides in length and may bederived from the nucleotide sequence shown in FIG. 241 (SEQ ID NO: 422).

[2615] In another embodiment, the invention provides isolated PRO1335polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2616] In a specific aspect, the invention provides isolated nativesequence PRO1335 polypeptide, which in certain embodiments, includes anamino acid sequence comprising residues 1 or about 16 to about 337 ofFIG. 242 (SEQ ID NO: 423).

[2617] In another aspect, the invention concerns an isolated PRO1335polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues1 or about 16 to about 337, inclusive of FIG. 242 (SEQ ID NO: 423).

[2618] In a further aspect, the invention concerns an isolated PRO1335polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 1 orabout 16 to about 337, inclusive of FIG. 242 (SEQ ID NO: 423).

[2619] In yet another aspect, the invention concerns an isolated PRO1335polypeptide, comprising the sequence of amino acid residues 1 or about16 to about 337, inclusive of FIG. 242 (SEQ ID NO: 423), or a fragmentthereof sufficient to provide a binding site for an anti-PRO1335antibody. Preferably, the PRO1335 fragment retains a qualitativebiological activity of a native PRO1335 polypeptide.

[2620] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1335 polypeptide havingthe sequence of amino acid residues from about 1 or about 16 to about337, inclusive of FIG. 242 (SEQ ID NO: 423), or (b) the complement ofthe DNA molecule of (a), and if the test DNA molecule has at least aboutan 80% sequence identity, preferably at least about an 85% sequenceidentity, more preferably at least about a 90% sequence identity, mostpreferably at least about a 95% sequence identity to (a) or (b), (ii)culturing a host cell comprising the test DNA molecule under conditionssuitable for expression of the polypeptide, and (iii) recovering thepolypeptide from the cell culture.

[2621] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO1335 polypeptide. In a particular embodiment,the agonist or antagonist is an anti-PRO1335 antibody.

[2622] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists of a native PRO1335 polypeptide bycontacting the native PRO1335 polypeptide with a candidate molecule andmonitoring a biological activity mediated by said polypeptide.

[2623] In a still further embodiment, the invention concerns acomposition comprising a PRO1335 polypeptide, or an agonist orantagonist as hereinabove defined, in combination with apharmaceutically acceptable carrier.

[2624] 122. PRO1329

[2625] A cDNA clone (DNA66660-1585) has been identified that encodes anovel polypeptide designated in the present application as “PRO1329.”

[2626] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1329 polypeptide.

[2627] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1329 polypeptide having the sequence of aminoacid residues from 1 or about 17 to about 209, inclusive of FIG. 244(SEQ ID NO: 429), or (b) the complement of the DNA molecule of (a).

[2628] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1329 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 138 andabout 716, inclusive, of FIG. 243 (SEQ ID NO: 428). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2629] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203279 (DNA66660-1585), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203279 (DNA66660-1585).

[2630] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 17 to about 209, inclusive of FIG. 244(SEQ ID NO: 429), or the complement of the DNA of (a).

[2631] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1329 polypeptide having the sequence of amino acid residues fromabout 17 to about 209, inclusive of FIG. 244 (SEQ ID NO: 429), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2632] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1329 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 16 in the sequence of FIG.244 (SEQ ID NO: 429).

[2633] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 17to about 209, inclusive of FIG. 244 (SEQ ID NO: 429), or (b) thecomplement of the DNA of (a).

[2634] Another embodiment is directed to fragments of a PRO1329polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2635] In another embodiment, the invention provides isolated PRO1329polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2636] In a specific aspect, the invention provides isolated nativesequence PRO1329 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 17 to 209 of FIG. 244 (SEQ ID NO:429).

[2637] In another aspect, the invention concerns an isolated PRO1329polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues17 to about 209, inclusive of FIG. 244 (SEQ ID NO: 429).

[2638] In a further aspect, the invention concerns an isolated PRO1329polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 17 to209 of FIG. 244 (SEQ ID NO: 429).

[2639] In yet another aspect, the invention concerns an isolated PRO1329polypeptide, comprising the sequence of amino acid residues 17 to about209, inclusive of FIG. 244 (SEQ ID NO: 429), or a fragment thereofsufficient to provide a binding site for an anti-PRO1329 antibody.Preferably, the PRO1329 fragment retains a qualitative biologicalactivity of a native PRO1329 polypeptide.

[2640] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1329 polypeptide havingthe sequence of amino acid residues from about 17 to about 209,inclusive of FIG. 244 (SEQ ID NO: 429), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2641] 123. PRO1550

[2642] A cDNA clone (DNA76393-1664) has been identified that encodes anovel secreted polypeptide and designated in the present application as“PRO1550.”

[2643] In one embodiment, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1550 polypeptide.

[2644] In one aspect, the isolated nucleic acid comprises DNA having atleast about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to (a) a DNAmolecule encoding a PRO1550 polypeptide having the sequence of aminoacid residues from 1 or about 31 to about 243, inclusive of FIG. 246(SEQ ID NO: 431), or (b) the complement of the DNA molecule of (a).

[2645] In another aspect, the invention concerns an isolated nucleicacid molecule encoding a PRO1550 polypeptide comprising DNA hybridizingto the complement of the nucleic acid between about residues 228 andabout 866, inclusive, of FIG. 245 (SEQ ID NO: 430). Preferably,hybridization occurs under stringent hybridization and wash conditions.

[2646] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising DNA having at least about 80% sequenceidentity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to (a) a DNA molecule encoding thesame mature polypeptide encoded by the human protein cDNA in ATCCDeposit No. 203323 (DNA76393-1664), or (b) the complement of the DNAmolecule of (a). In a preferred embodiment, the nucleic acid comprises aDNA encoding the same mature polypeptide encoded by the human proteincDNA in ATCC Deposit No. 203323 (DNA76393-1664).

[2647] In a still further aspect, the invention concerns an isolatednucleic acid molecule comprising (a) DNA encoding a polypeptide havingat least about 80% sequence identity, preferably at least about 85%sequence identity, more preferably at least about 90% sequence identity,most preferably at least about 95% sequence identity to the sequence ofamino acid residues from about 31 to about 243, inclusive of FIG. 246(SEQ ID NO: 431), or the complement of the DNA of (a).

[2648] In a further aspect, the invention concerns an isolated nucleicacid molecule having at least about 50 nucleotides, and preferably atleast about 100 nucleotides and produced by hybridizing a test DNAmolecule under stringent conditions with (a) a DNA molecule encoding aPRO1550 polypeptide having the sequence of amino acid residues fromabout 31 to about 243, inclusive of FIG. 246 (SEQ ID NO: 431), or (b)the complement of the DNA molecule of (a), and, if the DNA molecule hasat least about an 80% sequence identity, preferably at least about an85% sequence identity, more preferably at least about a 90% sequenceidentity, most preferably at least about a 95% sequence identity to (a)or (b), isolating the test DNA molecule.

[2649] In a specific aspect, the invention provides an isolated nucleicacid molecule comprising DNA encoding a PRO1550 polypeptide, with orwithout the N-terminal signal sequence and/or the initiating methionine,or is complementary to such encoding nucleic acid molecule. The signalpeptide has been tentatively identified as extending from amino acidposition 1 through about amino acid position 30 in the sequence of FIG.246 (SEQ ID NO: 431).

[2650] In another aspect, the invention concerns an isolated nucleicacid molecule comprising (a) DNA encoding a polypeptide scoring at leastabout 80% positives, preferably at least about 85% positives, morepreferably at least about 90% positives, most preferably at least about95% positives when compared with the amino acid sequence of residues 31to about 243, inclusive of FIG. 246 (SEQ ID NO: 431), or (b) thecomplement of the DNA of (a).

[2651] Another embodiment is directed to fragments of a PRO1550polypeptide coding sequence that may find use as hybridization probes.Such nucleic acid fragments are from about 20 to about 80 nucleotides inlength, preferably from about 20 to about 60 nucleotides in length, morepreferably from about 20 to about 50 nucleotides in length, and mostpreferably from about 20 to about 40 nucleotides in length.

[2652] In another embodiment, the invention provides isolated PRO1550polypeptide encoded by any of the isolated nucleic acid sequenceshereinabove defined.

[2653] In a specific aspect, the invention provides isolated nativesequence PRO1550 polypeptide, which in one embodiment, includes an aminoacid sequence comprising residues 31 to 243 of FIG. 246 (SEQ ID NO:431).

[2654] In another aspect, the invention concerns an isolated PRO1550polypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 85% sequence identity, morepreferably at least about 90% sequence identity, most preferably atleast about 95% sequence identity to the sequence of amino acid residues31 to about 243, inclusive of FIG. 246 (SEQ ID NO: 431).

[2655] In a further aspect, the invention concerns an isolated PRO1550polypeptide, comprising an amino acid sequence scoring at least about80% positives, preferably at least about 85% positives, more preferablyat least about 90% positives, most preferably at least about 95%positives when compared with the amino acid sequence of residues 31 to243 of FIG. 246 (SEQ ID NO: 431).

[2656] In yet another aspect, the invention concerns an isolated PRO1550polypeptide, comprising the sequence of amino acid residues 31 to about243, inclusive of FIG. 246 (SEQ ID NO: 431), or a fragment thereofsufficient to provide a binding site for an anti-PRO1550 antibody.Preferably, the PRO1550 fragment retains a qualitative biologicalactivity of a native PRO1550 polypeptide.

[2657] In a still further aspect, the invention provides a polypeptideproduced by (i) hybridizing a test DNA molecule under stringentconditions with (a) a DNA molecule encoding a PRO1550 polypeptide havingthe sequence of amino acid residues from about 31 to about 243,inclusive of FIG. 246 (SEQ ID NO: 431), or (b) the complement of the DNAmolecule of (a), and if the test DNA molecule has at least about an 80%sequence identity, preferably at least about an 85% sequence identity,more preferably at least about a 90% sequence identity, most preferablyat least about a 95% sequence identity to (a) or (b), (ii) culturing ahost cell comprising the test DNA molecule under conditions suitable forexpression of the polypeptide, and (iii) recovering the polypeptide fromthe cell culture.

[2658] 124. Additional Embodiments

[2659] In other embodiments of the present invention, the inventionprovides vectors comprising DNA encoding any of the herein describedpolypeptides. Host cell comprising any such vector are also provided. Byway of example, the host cells may be CHO cells, E. coli, or yeast. Aprocess for producing any of the herein described polypeptides isfurther provided and comprises culturing host cells under conditionssuitable for expression of the desired polypeptide and recovering thedesired polypeptide from the cell culture.

[2660] In other embodiments, the invention provides chimeric moleculescomprising any of the herein described polypeptides fused to aheterologous polypeptide or amino acid sequence. Example of suchchimeric molecules comprise any of the herein described polypeptidesfused to an epitope tag sequence or a Fc region of an immunoglobulin.

[2661] In another embodiment, the invention provides an antibody whichspecifically binds to any of the above or below described polypeptides.Optionally, the antibody is a monoclonal antibody, humanized antibody,antibody fragment or single-chain antibody.

[2662] In yet other embodiments, the invention provides oligonucleotideprobes useful for isolating genomic and cDNA nucleotide sequences,wherein those probes may be derived from any of the above or belowdescribed nucleotide sequences.

[2663] In other embodiments, the invention provides an isolated nucleicacid molecule comprising a nucleotide sequence that encodes a PROpolypeptide.

[2664] In one aspect, the isolated nucleic acid molecule comprises anucleotide sequence having at least about 80% sequence identity,preferably at least about 81% sequence identity, more preferably atleast about 82% sequence identity, yet more preferably at least about83% sequence identity, yet more preferably at least about 84% sequenceidentity, yet more preferably at least about 85% sequence identity, yetmore preferably at least about 86% sequence identity, yet morepreferably at least about 87% sequence identity, yet more preferably atleast about 88% sequence identity, yet more preferably at least about89% sequence identity, yet more preferably at least about 90% sequenceidentity, yet more preferably at least about 91% sequence identity, yetmore preferably at least about 92% sequence identity, yet morepreferably at least about 93% sequence identity, yet more preferably atleast about 94% sequence identity, yet more preferably at least about95% sequence identity, yet more preferably at least about 96% sequenceidentity, yet more preferably at least about 97% sequence identity, yetmore preferably at least about 98% sequence identity and yet morepreferably at least about 99% sequence identity to (a) a DNA moleculeencoding a PRO polypeptide having a full-length amino acid sequence asdisclosed herein, an amino acid sequence lacking the signal peptide asdisclosed herein or an extracellular domain of a transmembrane protein,with or without the signal peptide, as disclosed herein, or (b) thecomplement of the DNA molecule of (a).

[2665] In other aspects, the isolated nucleic acid molecule comprises anucleotide sequence having at least about 80% sequence identity,preferably at least about 81% sequence identity, more preferably atleast about 82% sequence identity, yet more preferably at least about83% sequence identity, yet more preferably at least about 84% sequenceidentity, yet more preferably at least about 85% sequence identity, yetmore preferably at least about 86% sequence identity, yet morepreferably at least about 87% sequence identity, yet more preferably atleast about 88% sequence identity, yet more preferably at least about89% sequence identity, yet more preferably at least about 90% sequenceidentity, yet more preferably at least about 91% sequence identity, yetmore preferably at least about 92% sequence identity, yet morepreferably at least about 93% sequence identity, yet more preferably atleast about 94% sequence identity, yet more preferably at least about95% sequence identity, yet more preferably at least about 96% sequenceidentity, yet more preferably at least about 97% sequence identity, yetmore preferably at least about 98% sequence identity and yet morepreferably at least about 99% sequence identity to (a) a DNA moleculecomprising the coding sequence of a full-length PRO polypeptide cDNA asdisclosed herein, the coding sequence of a PRO polypeptide lacking thesignal peptide as disclosed herein or the coding sequence of anextracellular domain of a transmembrane PRO polypeptide, with or withoutthe signal peptide, as disclosed herein, or (b) the complement of theDNA molecule of (a).

[2666] In a further aspect, the invention concerns an isolated nucleicacid molecule comprising a nucleotide sequence having at least about 80%sequence identity, preferably at least about 81% sequence identity, morepreferably at least about 82% sequence identity, yet more preferably atleast about 83% sequence identity, yet more preferably at least about84% sequence identity, yet more preferably at least about 85% sequenceidentity, yet more preferably at least about 86% sequence identity, yetmore preferably at least about 87% sequence identity, yet morepreferably at least about 88% sequence identity, yet more preferably atleast about 89% sequence identity, yet more preferably at least about90% sequence identity, yet more preferably at least about 91% sequenceidentity, yet more preferably at least about 92% sequence identity, yetmore preferably at least about 93% sequence identity, yet morepreferably at least about 94% sequence identity, yet more preferably atleast about 95% sequence identity, yet more preferably at least about96% sequence identity, yet more preferably at least about 97% sequenceidentity, yet more preferably at least about 98% sequence identity andyet more preferably at least about 99% sequence identity to (a) a DNAmolecule that encodes the same mature polypeptide encoded by any of thehuman protein cDNAs deposited with the ATCC as disclosed herein, or (b)the complement of the DNA molecule of (a).

[2667] Another aspect the invention provides an isolated nucleic acidmolecule comprising a nucleotide sequence encoding a PRO polypeptidewhich is either transmembrane domain-deleted or transmembranedomain-inactivated, or is complementary to such encoding nucleotidesequence, wherein the transmembrane domain(s) of such polypeptide aredisclosed herein. Therefore, soluble extracellular domains of the hereindescribed PRO polypeptides are contemplated.

[2668] Another embodiment is directed to fragments of a PRO polypeptidecoding sequence that may find use as, for example, hybridization probesor for encoding fragments of a PRO polypeptide that may optionallyencode a polypeptide comprising a binding site for an anti-PRO antibody.Such nucleic acid fragments are usually at least about 20 nucleotides inlength, preferably at least about 30 nucleotides in length, morepreferably at least about 40 nucleotides in length, yet more preferablyat least about 50 nucleotides in length, yet more preferably at leastabout 60 nucleotides in length, yet more preferably at least about 70nucleotides in length, yet more preferably at least about 80 nucleotidesin length, yet more preferably at least about 90 nucleotides in length,yet more preferably at least about 100 nucleotides in length, yet morepreferably at least about 110 nucleotides in length, yet more preferablyat least about 120 nucleotides in length, yet more preferably at leastabout 130 nucleotides in length, yet more preferably at least about 140nucleotides in length, yet more preferably at least about 150nucleotides in length, yet more preferably at least about 160nucleotides in length, yet more preferably at least about 170nucleotides in length, yet more preferably at least about 180nucleotides in length, yet more preferably at least about 190nucleotides in length, yet more preferably at least about 200nucleotides in length, yet more preferably at least about 250nucleotides in length, yet more preferably at least about 300nucleotides in length, yet more preferably at least about 350nucleotides in length, yet more preferably at least about 400nucleotides in length, yet more preferably at least about 450nucleotides in length, yet more preferably at least about 500nucleotides in length, yet more preferably at least about 600nucleotides in length, yet more preferably at least about 700nucleotides in length, yet more preferably at least about 800nucleotides in length, yet more preferably at least about 900nucleotides in length and yet more preferably at least about 1000nucleotides in length, wherein in this context the term “about” meansthe referenced nucleotide sequence length plus or minus 10% of thatreferenced length. It is noted that novel fragments of a PROpolypeptide-encoding nucleotide sequence may be determined in a routinemanner by aligning the PRO polypeptide-encoding nucleotide sequence withother known nucleotide sequences using any of a number of well knownsequence alignment programs and determining which PROpolypeptide-encoding nucleotide sequence fragment(s) are novel. All ofsuch PRO polypeptide-encoding nucleotide sequences are contemplatedherein. Also contemplated are the PRO polypeptide fragments encoded bythese nucleotide molecule fragments, preferably those PRO polypeptidefragments that comprise a binding site for an anti-PRO antibody.

[2669] In another embodiment, the invention provides isolated PROpolypeptide encoded by any of the isolated nucleic acid sequenceshereinabove identified.

[2670] In a certain aspect, the invention concerns an isolated PROpolypeptide, comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 81% sequence identity, morepreferably at least about 82% sequence identity, yet more preferably atleast about 83% sequence identity, yet more preferably at least about84% sequence identity, yet more preferably at least about 85% sequenceidentity, yet more preferably at least about 86% sequence identity, yetmore preferably at least about 87% sequence identity, yet morepreferably at least about 88% sequence identity, yet more preferably atleast about 89% sequence identity, yet more preferably at least about90% sequence identity, yet more preferably at least about 91% sequenceidentity, yet more preferably at least about 92% sequence identity, yetmore preferably at least about 93% sequence identity, yet morepreferably at least about 94% sequence identity, yet more preferably atleast about 95% sequence identity, yet more preferably at least about96% sequence identity, yet more preferably at least about 97% sequenceidentity, yet more preferably at least about 98% sequence identity andyet more preferably at least about 99% sequence identity to a PROpolypeptide having a full-length amino acid sequence as disclosedherein, an amino acid sequence lacking the signal peptide as disclosedherein or an extracellular domain of a transmembrane protein, with orwithout the signal peptide, as disclosed herein.

[2671] In a further aspect, the invention concerns an isolated PROpolypeptide comprising an amino acid sequence having at least about 80%sequence identity, preferably at least about 81% sequence identity, morepreferably at least about 82% sequence identity, yet more preferably atleast about 83% sequence identity, yet more preferably at least about84% sequence identity, yet more preferably at least about 85% sequenceidentity, yet more preferably at least about 86% sequence identity, yetmore preferably at least about 87% sequence identity, yet morepreferably at least about 88% sequence identity, yet more preferably atleast about 89% sequence identity, yet more preferably at least about90% sequence identity, yet more preferably at least about 91% sequenceidentity, yet more preferably at least about 92% sequence identity, yetmore preferably at least about 93% sequence identity, yet morepreferably at least about 94% sequence identity, yet more preferably atleast about 95% sequence identity, yet more preferably at least about96% sequence identity, yet more preferably at least about 97% sequenceidentity, yet more preferably at least about 98% sequence identity andyet more preferably at least about 99% sequence identity to an aminoacid sequence encoded by any of the human protein cDNAs deposited withthe ATCC as disclosed herein.

[2672] In a further aspect, the invention concerns an isolated PROpolypeptide comprising an amino acid sequence scoring at least about 80%positives, preferably at least about 81% positives, more preferably atleast about 82% positives, yet more preferably at least about 83%positives, yet more preferably at least about 84% positives, yet morepreferably at least about 85% positives, yet more preferably at leastabout 86% positives, yet more preferably at least about 87% positives,yet more preferably at least about 88% positives, yet more preferably atleast about 89% positives, yet more preferably at least about 90%positives, yet more preferably at least about 91% positives, yet morepreferably at least about 92% positives, yet more preferably at leastabout 93% positives, yet more preferably at least about 94% positives,yet more preferably at least about 95% positives, yet more preferably atleast about 96% positives, yet more preferably at least about 97%positives, yet more preferably at least about 98% positives and yet morepreferably at least about 99% positives when compared with the aminoacid sequence of a PRO polypeptide having a fill-length amino acidsequence as disclosed herein, an amino acid sequence lacking the signalpeptide as disclosed herein or an extracellular domain of atransmembrane protein, with or without the signal peptide, as disclosedherein.

[2673] In a specific aspect, the invention provides an isolated PROpolypeptide without the N-terminal signal sequence and/or the initiatingmethionine and is encoded by a nucleotide sequence that encodes such anamino acid sequence as hereinbefore described. Processes for producingthe same are also herein described, wherein those processes compriseculturing a host cell comprising a vector which comprises theappropriate encoding nucleic acid molecule under conditions suitable forexpression of the PRO polypeptide and recovering the PRO polypeptidefrom the cell culture.

[2674] Another aspect the invention provides an isolated PRO polypeptidewhich is either transmembrane domain-deleted or transmembranedomain-inactivated. Processes for producing the same are also hereindescribed, wherein those processes comprise culturing a host cellcomprising a vector which comprises the appropriate encoding nucleicacid molecule under conditions suitable for expression of the PROpolypeptide and recovering the PRO polypeptide from the cell culture.

[2675] In yet another embodiment, the invention concerns agonists andantagonists of a native PRO polypeptide as defined herein. In aparticular embodiment, the agonist or antagonist is an anti-PRO antibodyor a small molecule.

[2676] In a further embodiment, the invention concerns a method ofidentifying agonists or antagonists to a PRO polypeptide which comprisecontacting the PRO polypeptide with a candidate molecule and monitoringa biological activity mediated by said PRO polypeptide. Preferably, thePRO polypeptide is a native PRO polypeptide.

[2677] In a still further embodiment, the invention concerns acomposition of matter comprising a PRO polypeptide, or an agonist orantagonist of a PRO polypeptide as herein described, or an anti-PROantibody, in combination with a carrier. Optionally, the carrier is apharmaceutically acceptable carrier.

[2678] Another embodiment of the present invention is directed to theuse of a PRO polypeptide, or an agonist or antagonist thereof ashereinbefore described, or an anti-PRO antibody, for the preparation ofa medicament useful in the treatment of a condition which is responsiveto the PRO polypeptide, an agonist or antagonist thereof or an anti-PROantibody.

BRIEF DESCRIPTION OF THE DRAWINGS

[2679]FIG. 1 shows a nucleotide sequence (SEQ ID NO: 3) of a nativesequence PRO1560 (UNQ767) cDNA, wherein SEQ ID NO: 3 is a clonedesignated herein as “DNA19902-1669”. The start and stop codons areshown in bold and underlined font.

[2680]FIG. 2 shows the amino acid sequence (SEQ ID NO: 4) derived fromthe coding sequence of SEQ ID NO: 3 shown in FIG. 1.

[2681]FIG. 3 shows a nucleotide sequence (SEQ ID NO: 5) of a nativesequence PRO444 (UNQ328) cDNA, wherein SEQ ID NO: 5 is a clonedesignated herein as “DNA26846-1397”. The start and stop codons areshown in bold and underlined font.

[2682]FIG. 4 shows the amino acid sequence (SEQ ID NO: 6) derived fromthe coding sequence of SEQ ID NO: 5 shown in FIG. 3.

[2683]FIG. 5 shows a nucleotide sequence (SEQ ID NO: 7) of a nativesequence PRO1018 (UNQ501) cDNA, wherein SEQ ID NO: 7 is a clonedesignated herein as DNA56107-1415”. The start and stop codons are shownin bold and underlined font.

[2684]FIG. 6 shows the amino acid sequence (SEQ ID NO: 8) derived fromthe coding sequence of SEQ ID NO: 7 shown in FIG. 5.

[2685]FIG. 7 shows a nucleotide sequence (SEQ ID NO: 9) of a nativesequence PRO1773 (UNQ835) cDNA, wherein SEQ ID NO: 9 is a clonedesignated herein as “DNA56406-1704”. The start and stop codons areshown in bold and underlined font.

[2686]FIG. 8 shows the amino acid sequence (SEQ ID NO: 10) derived fromthe coding sequence of SEQ ID NO: 9 shown in FIG. 7.

[2687]FIG. 9 shows a nucleotide sequence (SEQ ID NO: 11) of a nativesequence PRO1477 (UNQ747) cDNA, wherein SEQ ID NO: 11 is a clonedesignated herein as “DNA56529-1647”. The start and stop codons areshown in bold and underlined font.

[2688]FIG. 10 shows the amino acid sequence (SEQ ID NO: 12) derived fromthe coding sequence of SEQ ID NO: 11 shown in FIG. 9.

[2689]FIG. 11 shows a nucleotide sequence (SEQ ID NO: 16) of a nativesequence PRO1478 (UNQ748) cDNA, wherein SEQ ID NO: 16 is a clonedesignated herein as “DNA56531-1648”. The start and stop codons areshown in bold and underlined font.

[2690]FIG. 12 shows the amino acid sequence (SEQ ID NO: 17) derived fromthe coding sequence of SEQ ID NO: 16 shown in FIG. 11.

[2691]FIG. 13 shows a nucleotide sequence (SEQ ID NO: 21) of a nativesequence PRO831 (UNQ471) cDNA, wherein SEQ ID NO: 21 is a clonedesignated herein as “DNA56862-1343”. The start and stop codons areshown in bold and underlined font.

[2692]FIG. 14 shows the amino acid sequence (SEQ ID NO: 22) derived fromthe coding sequence of SEQ ID NO: 21 shown in FIG. 13.

[2693]FIG. 15 shows a nucleotide sequence (SEQ ID NO: 23) of a nativesequence PRO1113 (UNQ556) cDNA, wherein SEQ ID NO: 23 is a clonedesignated herein as “DNA57254-1477”. The start and stop codons areshown in bold and underlined font.

[2694]FIG. 16 shows the amino acid sequence (SEQ ID NO: 24) derived fromthe coding sequence of SEQ ID NO: 23 shown in FIG. 15.

[2695]FIG. 17 shows a nucleotide sequence (SEQ ID NO: 28) of a nativesequence PRO1194 (UNQ607) cDNA, wherein SEQ ID NO: 28 is a clonedesignated herein as “DNA57841-1522”. The start and stop codons areshown in bold and underlined font.

[2696]FIG. 18 shows the amino acid sequence (SEQ ID NO: 29) derived fromthe coding sequence of SEQ ID NO: 28 shown in FIG. 17.

[2697]FIG. 19 shows a nucleotide sequence (SEQ ID NO: 30) of a nativesequence PRO1110 (UNQ553) cDNA, wherein SEQ ID NO: 30 is a clonedesignated herein as “DNA58727-1474”. The start and stop codons areshown in bold and underlined font.

[2698]FIG. 20 shows the amino acid sequence (SEQ ID NO: 3 1) derivedfrom the coding sequence of SEQ ID NO: 30 shown in FIG. 19.

[2699]FIG. 21 shows a nucleotide sequence (SEQ ID NO: 32) of a nativesequence PRO1378 (UNQ715) cDNA, wherein SEQ ID NO: 32 is a clonedesignated herein as “DNA58730-1607”. The start and stop codons areshown in bold and underlined font.

[2700]FIG. 22 shows the amino acid sequence (SEQ ID NO: 33) derived fromthe coding sequence of SEQ ID NO: 32 shown in FIG. 21.

[2701]FIG. 23 shows a nucleotide sequence (SEQ ID NO: 40) of a nativesequence PRO1481 (UNQ750) cDNA, wherein SEQ ID NO: 40 is a clonedesignated herein as “DNA58732-1650”. The start and stop codons areshown in bold and underlined font.

[2702]FIG. 24 shows the amino acid sequence (SEQ ID NO: 41) derived fromthe coding sequence of SEQ ID NO: 40 shown in FIG. 23.

[2703]FIG. 25 shows a nucleotide sequence (SEQ ID NO: 42) of a nativesequence PRO1189 (UNQ603) cDNA, wherein SEQ ID NO: 42 is a clonedesignated herein as “DNA58828-1519”. The start and stop codons areshown in bold and underlined font.

[2704]FIG. 26 shows the amino acid sequence (SEQ ID NO: 43) derived fromthe coding sequence of SEQ ID NO: 42 shown in FIG. 25.

[2705]FIG. 27 shows a nucleotide sequence (SEQ ID NO: 49) of a nativesequence PRO1415 (UNQ731) cDNA, wherein SEQ ID NO: 49 is a clonedesignated herein as “DNA58852-1637”. The start and stop codons areshown in bold and underlined font.

[2706]FIG. 28 shows the amino acid sequence (SEQ ID NO: 50) derived fromthe coding sequence of SEQ ID NO: 49 shown in FIG. 27.

[2707]FIG. 29 shows a nucleotide sequence (SEQ ID NO: 51) of a nativesequence PRO1411 (UNQ729) cDNA, wherein SEQ ID NO: 51 is a clonedesignated herein as “DNA59212-1627”. The start and stop codons areshown in bold and underlined font.

[2708]FIG. 30 shows the amino acid sequence (SEQ ID NO: 52) derived fromthe coding sequence of SEQ ID NO: 51 shown in FIG. 29.

[2709]FIG. 31 shows a nucleotide sequence (SEQ ID NO: 53) of a nativesequence PRO1295 (UNQ664) cDNA, wherein SEQ ID NO: 53 is a clonedesignated herein as “DNA59218-1559”. The start and stop codons areshown in bold and underlined font.

[2710]FIG. 32 shows the amino acid sequence (SEQ ID NO: 54) derived fromthe coding sequence of SEQ ID NO: 53 shown in FIG. 31.

[2711]FIG. 33 shows a nucleotide sequence (SEQ ID NO: 55) of a nativesequence PRO1359 (UNQ708) cDNA, wherein SEQ ID NO: 55 is a clonedesignated herein as “DNA59219-1613”. The start and stop codons areshown in bold and underlined font.

[2712]FIG. 34 shows the amino acid sequence (SEQ ID NO: 56) derived fromthe coding sequence of SEQ ID NO: 55 shown in FIG. 33.

[2713]FIG. 35 shows a nucleotide sequence (SEQ ID NO: 57) of a nativesequence PRO1190 (UNQ604) cDNA, wherein SEQ ID NO: 57 is a clonedesignated herein as “DNA59586-1520”. The start and stop codons areshown in bold and underlined font.

[2714]FIG. 36 shows the amino acid sequence (SEQ ID NO: 58) derived fromthe coding sequence of SEQ ID NO: 57 shown in FIG. 35.

[2715]FIG. 37 shows a nucleotide sequence (SEQ ID NO: 62) of a nativesequence PRO1772 (UNQ834) cDNA, wherein SEQ ID NO: 62 is a clonedesignated herein as “DNA59817-1703”. The start and stop codons areshown in bold and underlined font.

[2716]FIG. 38 shows the amino acid sequence (SEQ ID NO: 63) derived fromthe coding sequence of SEQ ID NO: 62 shown in FIG. 37.

[2717]FIG. 39 shows a nucleotide sequence (SEQ ID NO: 67) of a nativesequence PRO1248 (UNQ631) cDNA, wherein SEQ ID NO: 67 is a clonedesignated herein as “DNA60278-1530”. The start and stop codons areshown in bold and underlined font.

[2718]FIG. 40 shows the amino acid sequence (SEQ ID NO: 68) derived fromthe coding sequence of SEQ ID NO: 67 shown in FIG. 39.

[2719]FIG. 41 shows a nucleotide sequence (SEQ ID NO: 69) of a nativesequence PRO1316 (UNQ682) cDNA, wherein SEQ ID NO: 69 is a clonedesignated herein as “DNA60608-1577”. The start and stop codons areshown in bold and underlined font.

[2720]FIG. 42 shows the amino acid sequence (SEQ ID NO: 70) derived fromthe coding sequence of SEQ ID NO: 69 shown in FIG. 41.

[2721]FIG. 43 shows a nucleotide sequence (SEQ ID NO: 71) of a nativesequence PRO1197 (UNQ610) cDNA, wherein SEQ ID NO: 71 is a clonedesignated herein as “DNA60611-1524”. The start and stop codons areshown in bold and underlined font.

[2722]FIG. 44 shows the amino acid sequence (SEQ ID NO: 72) derived fromthe coding sequence of SEQ ID NO: 71 shown in FIG. 43.

[2723]FIG. 45 shows a nucleotide sequence (SEQ ID NO: 76) of a nativesequence PRO1293 (UNQ662) cDNA, wherein SEQ ID NO: 76 is a clonedesignated herein as “DNA60618-1557”. The start and stop codons areshown in bold and underlined font.

[2724]FIG. 46 shows the amino acid sequence (SEQ ID NO: 77) derived fromthe coding sequence of SEQ ID NO: 76 shown in FIG. 45.

[2725]FIG. 47 shows a nucleotide sequence (SEQ ID NO: 78) of a nativesequence PRO1380 (UNQ717) cDNA, wherein SEQ ID NO: 78 is a clonedesignated herein as “DNA60740-1615”. The start and stop codons areshown in bold and underlined font.

[2726]FIG. 48 shows the amino acid sequence (SEQ ID NO: 79) derived fromthe coding sequence of SEQ ID NO: 78 shown in FIG. 47.

[2727]FIG. 49 shows a nucleotide sequence (SEQ ID NO: 83) of a nativesequence PRO1265 (UNQ636) cDNA, wherein SEQ ID NO: 83 is a clonedesignated herein as “DNA60764-1533”. The start and stop codons areshown in bold and underlined font.

[2728]FIG. 50 shows the amino acid sequence (SEQ ID NO: 84) derived fromthe coding sequence of SEQ ID NO: 83 shown in FIG. 49.

[2729]FIG. 51 shows a nucleotide sequence (SEQ ID NO: 85) of a nativesequence PRO1250 (UNQ633) cDNA, wherein SEQ ID NO: 85 is a clonedesignated herein as “DNA60775-1532”. The start and stop codons areshown in bold and underlined font.

[2730]FIG. 52 shows the amino acid sequence (SEQ ID NO: 86) derived fromthe coding sequence of SEQ ID NO: 85 shown in FIG. 51.

[2731]FIG. 53 shows a nucleotide sequence (SEQ ID NO: 87) of a nativesequence PRO1475 (UNQ746) cDNA, wherein SEQ ID NO: 87 is a clonedesignated herein as “DNA61185-1646”. The start and stop codons areshown in bold and underlined font.

[2732]FIG. 54 shows the amino acid sequence (SEQ ID NO: 88) derived fromthe coding sequence of SEQ ID NO: 87 shown in FIG. 53.

[2733]FIG. 55 shows a nucleotide sequence (SEQ ID NO: 94) of a nativesequence PRO1377 (UNQ714) cDNA, wherein SEQ ID NO: 94 is a clonedesignated herein as “DNA61608-1606”. The start and stop codons areshown in bold and underlined font.

[2734]FIG. 56 shows the amino acid sequence (SEQ ID NO: 95) derived fromthe coding sequence of SEQ ID NO: 94 shown in FIG. 55.

[2735]FIG. 57 shows a nucleotide sequence (SEQ ID NO: 99) of a nativesequence PRO1326 (UNQ686) cDNA, wherein SEQ ID NO: 99 is a clonedesignated herein as “DNA62808-1582”. The start and stop codons areshown in bold and underlined font.

[2736]FIG. 58 shows the amino acid sequence (SEQ ID NO: 100) derivedfrom the coding sequence of SEQ ID NO: 99 shown in FIG. 57.

[2737]FIG. 59 shows a nucleotide sequence (SEQ ID NO: 101) of a nativesequence PRO1249 (UNQ632) cDNA, wherein SEQ ID NO: 101 is a clonedesignated herein as “DNA62809-1531”. The start and stop codons areshown in bold and underlined font.

[2738]FIG. 60 shows the amino acid sequence (SEQ ID NO: 102) derivedfrom the coding sequence of SEQ ID NO: 100 shown in FIG. 59.

[2739]FIG. 61 shows a nucleotide sequence (SEQ ID NO: 103) of a nativesequence PRO1315 (UNQ681) cDNA, wherein SEQ ID NO: 103 is a clonedesignated herein as “DNA62815-1578”. The start and stop codons areshown in bold and underlined font.

[2740]FIG. 62 shows the amino acid sequence (SEQ ID NO: 104) derivedfrom the coding sequence of SEQ ID NO: 103 shown in FIG. 61.

[2741]FIG. 63 shows a nucleotide sequence (SEQ ID NO: 110) of a nativesequence PRO1549 (UNQ782) cDNA, wherein SEQ ID NO: 10 is a clonedesignated herein as “DNA62845-1684”. The start and stop codons areshown in bold and underlined font.

[2742]FIG. 64 shows the amino acid sequence (SEQ ID NO: 111) derivedfrom the coding sequence of SEQ ID NO: 110 shown in FIG. 63.

[2743]FIG. 65 shows a nucleotide sequence (SEQ ID NO: 115) of a nativesequence PRO1430 (UNQ736) cDNA, wherein SEQ ID NO: 115 is a clonedesignated herein as “DNA64842-1632”. The start and stop codons areshown in bold and underlined font.

[2744]FIG. 66 shows the amino acid sequence (SEQ ID NO: 116) derivedfrom the coding sequence of SEQ ID NO: 115 shown in FIG. 65.

[2745]FIG. 67 shows a nucleotide sequence (SEQ ID NO: 117) of a nativesequence PRO1374 (UNQ711) cDNA, wherein SEQ ID NO: 117 is a clonedesignated herein as “DNA64849-1604”. The start and stop codons areshown in bold and underlined font.

[2746]FIG. 68 shows the amino acid sequence (SEQ ID NO: 118) derivedfrom the coding sequence of SEQ ID NO: 117 shown in FIG. 67.

[2747]FIG. 69 shows a nucleotide sequence (SEQ ID NO: 122) of a nativesequence PRO131 1 (UNQ677) cDNA, wherein SEQ ID NO: 122 is a clonedesignated herein as “DNA64863-1573”. The start and stop codons areshown in bold and underlined font.

[2748]FIG. 70 shows the amino acid sequence (SEQ ID NO: 123) derivedfrom the coding sequence of SEQ ID NO: 122 shown in FIG. 69.

[2749]FIG. 71 shows a nucleotide sequence (SEQ ID NO: 127) of a nativesequence PRO1357 (UNQ706) cDNA, wherein SEQ ID NO: 127 is a clonedesignated herein as “DNA64881-1602”. The start and stop codons areshown in bold and underlined font.

[2750]FIG. 72 shows the amino acid sequence (SEQ ID NO: 128) derivedfrom the coding sequence of SEQ ID NO: 127 shown in FIG. 71.

[2751]FIG. 73 shows a nucleotide sequence (SEQ ID NO: 129) of a nativesequence PRO1244 (UNQ628) cDNA, wherein SEQ ID NO: 129 is a clonedesignated herein as “DNA64883-1526”. The start and stop codons areshown in bold and underlined font.

[2752]FIG. 74 shows the amino acid sequence (SEQ ID NO: 130) derivedfrom the coding sequence of SEQ ID NO: 129 shown in FIG. 73.

[2753]FIG. 75 shows a nucleotide sequence (SEQ ID NO: 131) of a nativesequence PRO1246 (UNQ630) cDNA, wherein SEQ ID NO: 131 is a clonedesignated herein as “DNA64885-1529”. The start and stop codons areshown in bold and underlined font.

[2754]FIG. 76 shows the amino acid sequence (SEQ ID NO: 132) derivedfrom the coding sequence of SEQ ID NO: 131 shown in FIG. 75.

[2755]FIG. 77 shows a nucleotide sequence (SEQ ID NO: 133) of a nativesequence PRO1356 (UNQ705) cDNA, wherein SEQ ID NO: 133 is a clonedesignated herein as “DNA64886-1601”. The start and stop codons areshown in bold and underlined font.

[2756]FIG. 78 shows the amino acid sequence (SEQ ID NO: 134) derivedfrom the coding sequence of SEQ ID NO: 133 shown in FIG. 77.

[2757]FIG. 79 shows a nucleotide sequence (SEQ ID NO: 135) of a nativesequence PRO1275 (UNQ645) cDNA, wherein SEQ ID NO: 135 is a clonedesignated herein as “DNA64888-1542”. The start and stop codons areshown in bold and underlined font.

[2758]FIG. 80 shows the amino acid sequence (SEQ ID NO: 136) derivedfrom the coding sequence of SEQ ID NO: 135 shown in FIG. 79.

[2759]FIG. 81 shows a nucleotide sequence (SEQ ID NO: 137) of a nativesequence PRO1274 (UNQ644) DNA, wherein SEQ ID NO: 137 is a clonedesignated herein as “DNA64889-1542”. The start and stop codons re shownin bold and underlined font.

[2760]FIG. 82 shows the amino acid sequence (SEQ ID NO: 138) derivedfrom the coding sequence of SEQ D NO: 137 shown in FIG. 81.

[2761]FIG. 83 shows a nucleotide sequence (SEQ ID NO: 139) of a nativesequence PRO1412 (UNQ730) DNA, wherein SEQ ID NO: 139 is a clonedesignated herein as “DNA64897-1628”. The start and stop codons areshown in bold and underlined font.

[2762]FIG. 84 shows the amino acid sequence (SEQ ID NO: 140) derivedfrom the coding sequence of SEQ ID NO: 139 shown in FIG. 83.

[2763]FIG. 85 shows a nucleotide sequence (SEQ ID NO: 141) of a nativesequence PRO1557 (UNQ765) cDNA, wherein SEQ ID NO: 141 is a clonedesignated herein as “DNA64902-1667”. The start and stop codons areshown in bold and underlined font.

[2764]FIG. 86 shows the amino acid sequence (SEQ ID NO: 142) derivedfrom the coding sequence of SEQ ID NO: 141 shown in FIG. 85.

[2765]FIG. 87 shows a nucleotide sequence (SEQ ID NO: 143) of a nativesequence PRO1286 (UNQ655) cDNA, wherein SEQ ID NO: 143 is a clonedesignated herein as “DNA64903-1553”. The start and stop codons areshown in bold and underlined font.

[2766]FIG. 88 shows the amino acid sequence (SEQ ID NO: 144) derivedfrom the coding sequence of SEQ ID NO: 143 shown in FIG. 87.

[2767]FIG. 89 shows a nucleotide sequence (SEQ ID NO: 145) of a nativesequence PRO1294 (UNQ663) cDNA, wherein SEQ ID NO: 145 is a clonedesignated herein as “DNA64905-1558”. The start and stop codons areshown in bold and underlined font.

[2768]FIG. 90 shows the amino acid sequence (SEQ ID NO: 146) derivedfrom the coding sequence of SEQ ID NO: 145 shown in FIG. 89.

[2769]FIG. 91 shows a nucleotide sequence (SEQ ID NO: 147) of a nativesequence PRO1347 (UNQ702) cDNA, wherein SEQ ID NO: 147 is a clonedesignated herein as “DNA64950-1590”. The start and stop codons areshown in bold and underlined font.

[2770]FIG. 92 shows the amino acid sequence (SEQ ID NO: 148) derivedfrom the coding sequence of SEQ ID NO: 147 shown in FIG. 91.

[2771] FIG. 93 shows a nucleotide sequence (SEQ ID NO: 152) of a nativesequence PRO1305 (UNQ671) cDNA, wherein SEQ ID NO: 152 is a clonedesignated herein as “DNA64952-1568”. The start and stop codons areshown in bold and underlined font.

[2772]FIG. 94 shows the amino acid sequence (SEQ ID NO: 153) derivedfrom the coding sequence of SEQ ID NO: 152 shown in FIG. 93.

[2773]FIG. 95 shows a nucleotide sequence (SEQ ID NO: 157) of a nativesequence PRO1273 (UNQ643) cDNA, wherein SEQ ID NO: 157 is a clonedesignated herein as “DNA65402-1540”. The start and stop codons areshown in bold and underlined font.

[2774]FIG. 96 shows the amino acid sequence (SEQ ID NO: 158) derivedfrom the coding sequence of SEQ ID NO: 157 shown in FIG. 95.

[2775]FIG. 97 shows a nucleotide sequence (SEQ ID NO: 159) of a nativesequence PRO1302 (UNQ668) cDNA, wherein SEQ ID NO: 159 is a clonedesignated herein as “DNA65403-1565”. The start and stop codons areshown in bold and underlined font.

[2776]FIG. 98 shows the amino acid sequence (SEQ ID NO: 160) derivedfrom the coding sequence of SEQ ID NO: 159 shown in FIG. 97.

[2777]FIG. 99 shows a nucleotide sequence (SEQ ID NO: 161) of a nativesequence PRO1283 (UNQ653) cDNA, wherein SEQ ID NO: 161 is a clonedesignated herein as “DNA65404-1551”. The start and stop codons areshown in bold and underlined font.

[2778]FIG. 100 shows the amino acid sequence (SEQ ID NO: 162) derivedfrom the coding sequence of SEQ ID NO: 161 shown in FIG. 99.

[2779]FIG. 101 shows a nucleotide sequence (SEQ ID NO: 169) of a nativesequence PRO1279 (UNQ649) cDNA, wherein SEQ ID NO: 169 is a clonedesignated herein as “DNA65405-1547”. The start and stop codons areshown in bold and underlined font.

[2780]FIG. 102 shows the amino acid sequence (SEQ ID NO: 170) derivedfrom the coding sequence of SEQ ID NO: 169 shown in FIG. 101.

[2781]FIG. 103 shows a nucleotide sequence (SEQ ID NO: 179) of a nativesequence PRO1304 (UNQ670) cDNA, wherein SEQ ID NO: 179 is a clonedesignated herein as “DNA65406-1567”. The start and stop codons areshown in bold and underlined font.

[2782]FIG. 104 shows the amino acid sequence (SEQ ID NO: 180) derivedfrom the coding sequence of SEQ ID NO: 179 shown in FIG. 103.

[2783]FIG. 105 shows a nucleotide sequence (SEQ ID NO: 188) of a nativesequence PRO1317 (UNQ683) cDNA, wherein SEQ ID NO: 188 is a clonedesignated herein as “DNA65408-1578”. The start and stop codons areshown in bold and underlined font.

[2784]FIG. 106 shows the amino acid sequence (SEQ ID NO: 189) derivedfrom the coding sequence of SEQ ID NO: 188 shown in FIG. 105.

[2785]FIG. 107 shows a nucleotide sequence (SEQ ID NO: 193) of a nativesequence PRO1303 (UNQ669) cDNA, wherein SEQ ID NO: 193 is a clonedesignated herein as “DNA65409-1566”. The start and stop codons areshown in bold and underlined font.

[2786]FIG. 108 shows the amino acid sequence (SEQ ID NO: 194) derivedfrom the coding sequence of SEQ ID NO: 193 shown in FIG. 107.

[2787]FIG. 109 shows a nucleotide sequence (SEQ ID NO: 195) of a nativesequence PRO1306 (UNQ672) cDNA, wherein SEQ ID NO: 195 is a clonedesignated herein as “DNA65410-1569”. The start and stop codons areshown in bold and underlined font.

[2788]FIG. 110 shows the amino acid sequence (SEQ ID NO: 196) derivedfrom the coding sequence of SEQ ID NO: 195 shown in FIG. 109.

[2789] FIGS. 111A-B show a nucleotide sequence (SEQ ID NO: 197) of anative sequence PRO1336 (UNQ691) cDNA, wherein SEQ ID NO: 197 is a clonedesignated herein as “DNA65423-1595”. The start and stop codons areshown in bold and underlined font.

[2790]FIG. 112 shows the amino acid sequence (SEQ ID NO: 198) derivedfrom the coding sequence of SEQ ID NO: 198 shown in FIGS. 111A-B.

[2791]FIG. 113 shows a nucleotide sequence (SEQ ID NO: 202) of a nativesequence PRO1278 (UNQ648) cDNA, wherein SEQ ID NO: 202 is a clonedesignated herein as “DNA66304-1546”. The start and stop codons areshown in bold and underlined font.

[2792]FIG. 114 shows the amino acid sequence (SEQ ID NO: 203) derivedfrom the coding sequence of SEQ ID NO: 202 shown in FIG. 113.

[2793]FIG. 115 shows a nucleotide sequence (SEQ ID NO: 209) of a nativesequence PRO1298 (UNQ666) cDNA, wherein SEQ ID NO: 209 is a clonedesignated herein as “DNA66511-1563”. The start and stop codons areshown in bold and underlined font.

[2794]FIG. 116 shows the amino acid sequence (SEQ ID NO: 210) derivedfrom the coding sequence of SEQ ID NO: 209 shown in FIG. 115.

[2795]FIG. 117 shows a nucleotide sequence (SEQ ID NO: 211) of a nativesequence PRO1301 (UNQ667) cDNA, wherein SEQ ID NO: 211 is a clonedesignated herein as “DNA66512-1564”. The start and stop codons areshown in bold and underlined font.

[2796]FIG. 118 shows the amino acid sequence (SEQ ID NO: 212) derivedfrom the coding sequence of SEQ ID NO: 211 shown in FIG. 117.

[2797]FIG. 119 shows a nucleotide sequence (SEQ ID NO: 213) of a nativesequence PRO1268 (UNQ638) cDNA, wherein SEQ ID NO: 213 is a clonedesignated herein as “DNA66519-1535”. The start and stop codons areshown in bold and underlined font.

[2798]FIG. 120 shows the amino acid sequence (SEQ ID NO: 214) derivedfrom the coding sequence of SEQ ID NO: 213 shown in FIG. 119.

[2799]FIG. 121 shows a nucleotide sequence (SEQ ID NO: 215) of a nativesequence PRO1269 (UNQ639) cDNA, wherein SEQ ID NO: 215 is a clonedesignated herein as “DNA66520-1536”. The start and stop codons areshown in bold and underlined font.

[2800]FIG. 122 shows the amino acid sequence (SEQ ID NO: 216) derivedfrom the coding sequence of SEQ ID NO: 215 shown in FIG. 121.

[2801]FIG. 123 shows a nucleotide sequence (SEQ ID NO: 217) of a nativesequence PRO1327 (UNQ687) cDNA, wherein SEQ ID NO: 217 is a clonedesignated herein as “DNA66521-1583”. The start and stop codons areshown in bold and underlined font.

[2802]FIG. 124 shows the amino acid sequence (SEQ ID NO: 218) derivedfrom the coding sequence of SEQ ID NO: 217 shown in FIG. 123.

[2803]FIG. 125 shows a nucleotide sequence (SEQ ID NO: 219) of a nativesequence PRO1382 (UNQ718) cDNA, wherein SEQ ID NO: 219 is a clonedesignated herein as “DNA66526-1616”. The start and stop codons areshown in bold and underlined font.

[2804]FIG. 126 shows the amino acid sequence (SEQ ID NO: 220) derivedfrom the coding sequence of SEQ ID NO: 219 shown in FIG. 125.

[2805]FIG. 127 shows a nucleotide sequence (SEQ ID NO: 224) of a nativesequence PRO1328 (UNQ688) cDNA, wherein SEQ ID NO: 224 is a clonedesignated herein as “DNA66658-1584”. The start and stop codons areshown in bold and underlined font.

[2806]FIG. 128 shows the amino acid sequence (SEQ ID NO: 225) derivedfrom the coding sequence of SEQ ID NO: 224 shown in FIG. 127.

[2807]FIG. 129 shows a nucleotide sequence (SEQ ID NO: 226) of a nativesequence PRO1325 (UNQ685) cDNA, wherein SEQ ID NO: 226 is a clonedesignated herein as “DNA66659-1593”. The start and stop codons areshown in bold and underlined font.

[2808]FIG. 130 shows the amino acid sequence (SEQ ID NO: 227) derivedfrom the coding sequence of SEQ ID NO: 226 shown in FIG. 129.

[2809]FIG. 131 shows a nucleotide sequence (SEQ ID NO: 228) of a nativesequence PRO1340 (UNQ695) cDNA, wherein SEQ ID NO: 228 is a clonedesignated herein as “DNA66663-1598”. The start and stop codons areshown in bold and underlined font.

[2810]FIG. 132 shows the amino acid sequence (SEQ ID NO: 229) derivedfrom the coding sequence of SEQ ID NO: 228 shown in FIG. 131.

[2811]FIG. 133 shows a nucleotide sequence (SEQ ID NO: 233) of a nativesequence PRO1339 (UNQ694) cDNA, wherein SEQ ID NO: 233 is a clonedesignated herein as “DNA66669-1597”. The start and stop codons areshown in bold and underlined font.

[2812]FIG. 134 shows the amino acid sequence (SEQ ID NO: 234) derivedfrom the coding sequence of SEQ ID NO: 233 shown in FIG. 133.

[2813]FIG. 135 shows a nucleotide sequence (SEQ ID NO: 235) of a nativesequence PRO1337 (UNQ692) cDNA, wherein SEQ ID NO: 235 is a clonedesignated herein as “DNA66672-1586”. The start and stop codons areshown in bold and underlined font.

[2814]FIG. 136 shows the amino acid sequence (SEQ ID NO: 236) derivedfrom the coding sequence of SEQ ID NO: 235 shown in FIG. 135.

[2815]FIG. 137 shows a nucleotide sequence (SEQ ID NO: 242) of a nativesequence PRO1342 (UNQ697) cDNA, wherein SEQ ID NO: 242 is a clonedesignated herein as “DNA66674-1599”. The start and stop codons areshown in bold and underlined font.

[2816]FIG. 138 shows the amino acid sequence (SEQ ID NO: 243) derivedfrom the coding sequence of SEQ ID NO: 242 shown in FIG. 137.

[2817]FIG. 139 shows a nucleotide sequence (SEQ ID NO: 247) of a nativesequence PRO1343 (UNQ698) cDNA, wherein SEQ ID NO: 247 is a clonedesignated herein as “DNA66675-1587”. The start and stop codons areshown in bold and underlined font.

[2818]FIG. 140 shows the amino acid sequence (SEQ ID NO: 248) derivedfrom the coding sequence of SEQ ID NO: 247 shown in FIG. 139.

[2819]FIG. 141 shows a nucleotide sequence (SEQ ID NO: 252) of a nativesequence PRO1480 (UNQ749) cDNA, wherein SEQ ID NO: 252 is a clonedesignated herein as “DNA67962-1649”. The start and stop codons areshown in bold and underlined font.

[2820]FIG. 142 shows the amino acid sequence (SEQ ID NO: 253) derivedfrom the coding sequence of SEQ ID NO: 252 shown in FIG. 141.

[2821] FIGS. 143A-B show a nucleotide sequence (SEQ ID NO: 259) of anative sequence PRO1487 (UNQ756) cDNA, wherein SEQ ID NO: 259 is a clonedesignated herein as “DNA68836-1656”. The start and stop codons areshown in bold and underlined font.

[2822]FIG. 144 shows the amino acid sequence (SEQ ID NO: 260) derivedfrom the coding sequence of SEQ ID NO: 259 shown in FIGS. 143A-B.

[2823]FIG. 145 shows a nucleotide sequence (SEQ ID NO: 264) of a nativesequence PRO1418 (UNQ732) cDNA, wherein SEQ ID NO: 264 is a clonedesignated herein as “DNA68864-1629”. The start and stop codons areshown in bold and underlined font.

[2824]FIG. 146 shows the amino acid sequence (SEQ ID NO: 265) derivedfrom the coding sequence of SEQ ID NO: 264 shown in FIG. 145.

[2825]FIG. 147 shows a nucleotide sequence (SEQ ID NO: 266) of a nativesequence PRO1472 (UNQ744) cDNA, wherein SEQ ID NO: 266 is a clonedesignated herein as “DNA68866-1644”. The start and stop codons areshown in bold and underlined font.

[2826]FIG. 148 shows the amino acid sequence (SEQ ID NO: 267) derivedfrom the coding sequence of SEQ ID NO: 266 shown in FIG. 147.

[2827]FIG. 149 shows a nucleotide sequence (SEQ ID NO: 268) of a nativesequence PRO1461 (UNQ742) cDNA, wherein SEQ ID NO: 268 is a clonedesignated herein as “DNA68871-1638”. The start and stop codons areshown in bold and underlined font.

[2828]FIG. 150 shows the amino acid sequence (SEQ ID NO: 269) derivedfrom the coding sequence of SEQ ID NO: 268 shown in FIG. 149.

[2829]FIG. 151 shows a nucleotide sequence (SEQ ID NO: 270) of a nativesequence PRO1410 (UNQ728) cDNA, wherein SEQ ID NO: 270 is a clonedesignated herein as “DNA68874-1622”. The start and stop codons areshown in bold and underlined font.

[2830]FIG. 152 shows the amino acid sequence (SEQ ID NO: 271) derivedfrom the coding sequence of SEQ ID NO: 270 shown in FIG. 151.

[2831]FIG. 153 shows a nucleotide sequence (SEQ ID NO: 272) of a nativesequence PRO1568 (UNQ774) cDNA, wherein SEQ ID NO: 272 is a clonedesignated herein as “DNA68880-1676”. The start and stop codons areshown in bold and underlined font.

[2832]FIG. 154 shows the amino acid sequence (SEQ ID NO: 273) derivedfrom the coding sequence of SEQ ID NO: 272 shown in FIG. 153.

[2833]FIG. 155 shows a nucleotide sequence (SEQ ID NO: 274) of a nativesequence PRO1570 (UNQ776) cDNA, wherein SEQ ID NO: 274 is a clonedesignated herein as “DNA68885-1678”. The start and stop codons areshown in bold and underlined font.

[2834]FIG. 156 shows the amino acid sequence (SEQ ID NO: 275) derivedfrom the coding sequence of SEQ ID NO: 274 shown in FIG. 155.

[2835]FIG. 157 shows a nucleotide sequence (SEQ ID NO: 276) of a nativesequence PRO1317 (UNQ783) cDNA, wherein SEQ ID NO: 276 is a clonedesignated herein as “DNA71166-1685”. The start and stop codons areshown in bold and underlined font.

[2836]FIG. 158 shows the amino acid sequence (SEQ ID NO: 277) derivedfrom the coding sequence of SEQ ID NO: 276 shown in FIG. 157.

[2837]FIG. 159 shows a nucleotide sequence (SEQ ID NO: 281) of a nativesequence PRO1780 (UNQ842) cDNA, wherein SEQ ID NO: 281 is a clonedesignated herein as “DNA71169-1709”. The start and stop codons areshown in bold and underlined font.

[2838]FIG. 160 shows the amino acid sequence (SEQ ID NO: 282) derivedfrom the coding sequence of SEQ ID NO: 281 shown in FIG. 159.

[2839]FIG. 161 shows a nucleotide sequence (SEQ ID NO: 286) of a nativesequence PRO1486 (UNQ755) cDNA, wherein SEQ ID NO: 286 is a clonedesignated herein as “DNA71180-1655”. The start and stop codons areshown in bold and underlined font.

[2840]FIG. 162 shows the amino acid sequence (SEQ ID NO: 287) derivedfrom the coding sequence of SEQ ID NO: 286 shown in FIG. 161.

[2841]FIG. 163 shows a nucleotide sequence (SEQ ID NO: 291) of a nativesequence PRO1433 (UNQ738) cDNA, wherein SEQ ID NO: 291 is a clonedesignated herein as “DNA71184-1634”. The start and stop codons areshown in bold and underlined font.

[2842]FIG. 164 shows the amino acid sequence (SEQ ID NO: 292) derivedfrom the coding sequence of SEQ ID NO: 291 shown in FIG. 163.

[2843]FIG. 165 shows a nucleotide sequence (SEQ ID NO: 296) of a nativesequence PRO1490 (UNQ759) cDNA, wherein SEQ ID NO: 296 is a clonedesignated herein as “DNA71213-1659”. The start and stop codons areshown in bold and underlined font.

[2844]FIG. 166 shows the amino acid sequence (SEQ ID NO: 297) derivedfrom the coding sequence of SEQ ID NO: 296 shown in FIG. 165.

[2845]FIG. 167 shows a nucleotide sequence (SEQ ID NO: 301) of a nativesequence PRO1482 (UNQ751) cDNA, wherein SEQ ID NO: 301 is a clonedesignated herein as “DNA71234-1651”. The start and stop codons areshown in bold and underlined font.

[2846]FIG. 168 shows the amino acid sequence (SEQ ID NO: 302) derivedfrom the coding sequence of SEQ ID NO: 301 shown in FIG. 167.

[2847]FIG. 169 shows a nucleotide sequence (SEQ ID NO: 303) of a nativesequence PRO1446 (UNQ740) cDNA, wherein SEQ ID NO: 303 is a clonedesignated herein as “DNA71277-1636”. The start and stop codons areshown in bold and underlined font.

[2848]FIG. 170 shows the amino acid sequence (SEQ ID NO: 304) derivedfrom the coding sequence of SEQ ID NO: 303 shown in FIG. 169.

[2849]FIG. 171 shows a nucleotide sequence (SEQ ID NO: 305) of a nativesequence PRO1558 (UNQ766) cDNA, wherein SEQ ID NO: 305 is a clonedesignated herein as “DNA71282-1668”. The start and stop codons areshown in bold and underlined font.

[2850]FIG. 172 shows the amino acid sequence (SEQ ID NO: 306) derivedfrom the coding sequence of SEQ ID NO: 305 shown in FIG. 171.

[2851]FIG. 173 shows a nucleotide sequence (SEQ ID NO: 307) of a nativesequence PRO1604 (UNQ785) cDNA, wherein SEQ ID NO: 307 is a clonedesignated herein as “DNA71286-1687”. The start and stop codons areshown in bold and underlined font.

[2852]FIG. 174 shows the amino acid sequence (SEQ ID NO: 308) derivedfrom the coding sequence of SEQ ID NO: 307 shown in FIG. 173.

[2853]FIG. 175 shows a nucleotide sequence (SEQ ID NO: 309) of a nativesequence PRO1491 (UNQ760) cDNA, wherein SEQ ID NO: 309 is a clonedesignated herein as “DNA71883-1660”. The start and stop codons areshown in bold and underlined font.

[2854]FIG. 176 shows the amino acid sequence (SEQ ID NO: 310) derivedfrom the coding sequence of SEQ ID NO: 309 shown in FIG. 175.

[2855]FIG. 177 shows a nucleotide sequence (SEQ ID NO: 314) of a nativesequence PRO1431 (UNQ737) cDNA, wherein SEQ ID NO: 314 is a clonedesignated herein as “DNA73401-1633”. The start and stop codons areshown in bold and underlined font.

[2856]FIG. 178 shows the amino acid sequence (SEQ ID NO: 315) derivedfrom the coding sequence of SEQ ID NO: 314 shown in FIG. 177.

[2857] FIGS. 179A-B show a nucleotide sequence (SEQ ID NO: 316) of anative sequence PRO1563 (UNQ769) cDNA, wherein SEQ ID NO: 316 is a clonedesignated herein as “DNA73492-1671”. The start and stop codons areshown in bold and underlined font.

[2858]FIG. 180 shows the amino acid sequence (SEQ ID NO: 317) derivedfrom the coding sequence of SEQ ID NO: 316 shown in FIGS. 179A-B.

[2859]FIG. 181 shows a nucleotide sequence (SEQ ID NO: 321) of a nativesequence PRO1565 (UNQ771) cDNA, wherein SEQ ID NO: 321 is a clonedesignated herein as “DNA73727-1673”. The start and stop codons areshown in bold and underlined font.

[2860]FIG. 182 shows the amino acid sequence (SEQ ID NO: 322) derivedfrom the coding sequence of SEQ ID NO: 321 shown in FIG. 181.

[2861]FIG. 183 shows a nucleotide sequence (SEQ ID NO: 323) of a nativesequence PRO1571 (UNQ777) cDNA, wherein SEQ ID NO: 323 is a clonedesignated herein as “DNA73730-1679”. The start and stop codons areshown in bold and underlined font.

[2862] FIG. 184 shows the amino acid sequence (SEQ ID NO: 324) derivedfrom the coding sequence of SEQ ID NO: 323 shown in FIG. 183.

[2863]FIG. 185 shows a nucleotide sequence (SEQ ID NO: 325) of a nativesequence PRO1572 (UNQ778) cDNA, wherein SEQ ID NO: 325 is a clonedesignated herein as “DNA73734-1680”. The start and stop codons areshown in bold and underlined font.

[2864]FIG. 186 shows the amino acid sequence (SEQ ID NO: 326) derivedfrom the coding sequence of SEQ ID NO: 325 shown in FIG. 185.

[2865]FIG. 187 shows a nucleotide sequence (SEQ ID NO: 327) of a nativesequence PRO1573 (UNQ779) cDNA, wherein SEQ ID NO: 327 is a clonedesignated herein as “DNA73735-1681”. The start and stop codons areshown in bold and underlined font.

[2866]FIG. 188 shows the amino acid sequence (SEQ ID NO: 328) derivedfrom the coding sequence of SEQ ID NO: 327 shown in FIG. 187.

[2867]FIG. 189 shows a nucleotide sequence (SEQ ID NO: 329) of a nativesequence PRO1488 (UNQ757) cDNA, wherein SEQ ID NO: 329 is a clonedesignated herein as “DNA73736-1657”. The start and stop codons areshown in bold and underlined font.

[2868]FIG. 190 shows the amino acid sequence (SEQ ID NO: 330) derivedfrom the coding sequence of SEQ ID NO: 329 shown in FIG. 189.

[2869]FIG. 191 shows a nucleotide sequence (SEQ ID NO: 331) of a nativesequence PRO1489 (UNQ758) cDNA, wherein SEQ ID NO: 331 is a clonedesignated herein as “DNA73737-1658”. The start and stop codons areshown in bold and underlined font.

[2870]FIG. 192 shows the amino acid sequence (SEQ ID NO: 332) derivedfrom the coding sequence of SEQ ID NO: 331 shown in FIG. 191.

[2871]FIG. 193 shows a nucleotide sequence (SEQ ID NO: 333) of a nativesequence PRO1474 (UNQ745) cDNA, wherein SEQ ID NO: 333 is a clonedesignated herein as “DNA73739-1645”. The start and stop codons areshown in bold and underlined font.

[2872]FIG. 194 shows the amino acid sequence (SEQ ID NO: 334) derivedfrom the coding sequence of SEQ ID NO: 333 shown in FIG. 193.

[2873]FIG. 195 shows a nucleotide sequence (SEQ ID NO: 335) of a nativesequence PRO1508 (UNQ761) cDNA, wherein SEQ ID NO: 335 is a clonedesignated herein as “DNA73742-1662”. The start and stop codons areshown in bold and underlined font.

[2874]FIG. 196 shows the amino acid sequence (SEQ ID NO: 336) derivedfrom the coding sequence of SEQ ID NO: 335 shown in FIG. 195.

[2875]FIG. 197 shows a nucleotide sequence (SEQ ID NO: 337) of a nativesequence PRO1555 (UNQ763) cDNA, wherein SEQ ID NO: 337 is a clonedesignated herein as “DNA73744-1665”. The start and stop codons areshown in bold and underlined font.

[2876]FIG. 198 shows the amino acid sequence (SEQ ID NO: 338) derivedfrom the coding sequence of SEQ ID NO: 337 shown in FIG. 197.

[2877]FIG. 199 shows a nucleotide sequence (SEQ ID NO: 339) of a nativesequence PRO1485 (UNQ754) cDNA, wherein SEQ ID NO: 339 is a clonedesignated herein as “DNA73746-1654”. The start and stop codons areshown in bold and underlined font.

[2878]FIG. 200 shows the amino acid sequence (SEQ ID NO: 340) derivedfrom the coding sequence of SEQ ID NO: 339 shown in FIG. 199.

[2879]FIG. 201 shows a nucleotide sequence (SEQ ID NO: 346) of a nativesequence PRO1564 (UNQ770) cDNA, wherein SEQ ID NO: 346 is a clonedesignated herein as “DNA73760-1672”. The start and stop codons areshown in bold and underlined font.

[2880]FIG. 202 shows the amino acid sequence (SEQ ID NO: 347) derivedfrom the coding sequence of SEQ ID NO: 346 shown in FIG. 201.

[2881]FIG. 203 shows a nucleotide sequence (SEQ ID NO: 351) of a nativesequence PRO1755 (UNQ828) cDNA, wherein SEQ ID NO: 351 is a clonedesignated herein as “DNA76396-1698”. The start and stop codons areshown in bold and underlined font.

[2882]FIG. 204 shows the amino acid sequence (SEQ ID NO: 352) derivedfrom the coding sequence of SEQ ID NO: 351 shown in FIG. 203.

[2883]FIG. 205 shows a nucleotide sequence (SEQ ID NO: 353) of a nativesequence PRO1757 (UNQ830) cDNA, wherein SEQ ID NO: 353 is a clonedesignated herein as “DNA76398-1699”. The start and stop codons areshown in bold and underlined font.

[2884]FIG. 206 shows the amino acid sequence (SEQ ID NO: 354) derivedfrom the coding sequence of SEQ ID NO: 353 shown in FIG. 205.

[2885]FIG. 207 shows a nucleotide sequence (SEQ ID NO: 355) of a nativesequence PRO1758 (UNQ831) cDNA, wherein SEQ ID NO: 355 is a clonedesignated herein as “DNA76399-1700”. The start and stop codons areshown in bold and underlined font.

[2886]FIG. 208 shows the amino acid sequence (SEQ ID NO: 356) derivedfrom the coding sequence of SEQ ID NO: 355 shown in FIG. 207.

[2887]FIG. 209 shows a nucleotide sequence (SEQ ID NO: 357) of a nativesequence PRO1575 (UNQ781) cDNA, wherein SEQ ID NO: 357 is a clonedesignated herein as “DNA76401-1683”. The start and stop codons areshown in bold and underlined font.

[2888]FIG. 210 shows the amino acid sequence (SEQ ID NO: 358) derivedfrom the coding sequence of SEQ ID NO: 357 shown in FIG. 209.

[2889]FIG. 211 shows a nucleotide sequence (SEQ ID NO: 363) of a nativesequence PRO1787 (UNQ849) cDNA, wherein SEQ ID NO: 363 is a clonedesignated herein as “DNA76510-2504”. The start and stop codons areshown in bold and underlined font.

[2890]FIG. 212 shows the amino acid sequence (SEQ ID NO: 364) derivedfrom the coding sequence of SEQ ID NO: 363 shown in FIG. 211.

[2891]FIG. 213 shows a nucleotide sequence (SEQ ID NO: 365) of a nativesequence PRO1781 (UNQ843) cDNA, wherein SEQ ID NO: 365 is a clonedesignated herein as “DNA76522-2500”. The start and stop codons areshown in bold and underlined font.

[2892]FIG. 214 shows the amino acid sequence (SEQ ID NO: 366) derivedfrom the coding sequence of SEQ ID NO: 365 shown in FIG. 213.

[2893]FIG. 215 shows a nucleotide sequence (SEQ ID NO: 371) of a nativesequence PRO1556 (UNQ764) cDNA, wherein SEQ ID NO: 371 is a clonedesignated herein as “DNA76529-1666”. The start and stop codons areshown in bold and underlined font.

[2894]FIG. 216 shows the amino acid sequence (SEQ ID NO: 372) derivedfrom the coding sequence of SEQ ID NO: 371 shown in FIG. 215.

[2895]FIG. 217 shows a nucleotide sequence (SEQ ID NO: 373) of a nativesequence PRO1759 (UNQ832) cDNA, wherein SEQ ID NO: 373 is a clonedesignated herein as “DNA76531-1701”. The start and stop codons areshown in bold and underlined font.

[2896]FIG. 218 shows the amino acid sequence (SEQ ID NO: 374) derivedfrom the coding sequence of SEQ ID NO: 373 shown in FIG. 217.

[2897]FIG. 219 shows a nucleotide sequence (SEQ ID NO: 375) of a nativesequence PRO1760 (UNQ833) cDNA, wherein SEQ ID NO: 375 is a clonedesignated herein as “DNA76532-1702”. The start and stop codons areshown in bold and underlined font.

[2898]FIG. 220 shows the amino acid sequence (SEQ ID NO: 376) derivedfrom the coding sequence of SEQ ID NO: 375 shown in FIG. 219.

[2899]FIG. 221 shows a nucleotide sequence (SEQ ID NO: 377) of a nativesequence PRO1561 (UNQ768) cDNA, wherein SEQ ID NO: 377 is a clonedesignated herein as “DNA76538-1670”. The start and stop codons areshown in bold and underlined font.

[2900]FIG. 222 shows the amino acid sequence (SEQ ID NO: 378) derivedfrom the coding sequence of SEQ ID NO: 377 shown in FIG. 221.

[2901]FIG. 223 shows a nucleotide sequence (SEQ ID NO: 382) of a nativesequence PRO1567 (UNQ773) cDNA, wherein SEQ ID NO: 382 is a clonedesignated herein as “DNA76541-1675”. The start and stop codons areshown in bold and underlined font.

[2902]FIG. 224 shows the amino acid sequence (SEQ ID NO: 383) derivedfrom the coding sequence of SEQ ID NO: 382 shown in FIG. 223.

[2903]FIG. 225 shows a nucleotide sequence (SEQ ID NO: 384) of a nativesequence PRO1693 (UNQ803) cDNA, wherein SEQ ID NO: 384 is a clonedesignated herein as “DNA77301-1693”. The start and stop codons areshown in bold and underlined font.

[2904]FIG. 226 shows the amino acid sequence (SEQ ID NO: 385) derivedfrom the coding sequence of SEQ ID NO: 384 shown in FIG. 225.

[2905]FIG. 227 shows a nucleotide sequence (SEQ ID NO: 389) of a nativesequence PRO1784 (UNQ846) cDNA, wherein SEQ ID NO: 389 is a clonedesignated herein as “DNA77303-2502”. The start and stop codons areshown in bold and underlined font.

[2906]FIG. 228 shows the amino acid sequence (SEQ ID NO: 390) derivedfrom the coding sequence of SEQ ID NO: 389 shown in FIG. 227.

[2907]FIG. 229 shows a nucleotide sequence (SEQ ID NO: 394) of a nativesequence PRO1605 (UNQ786) cDNA, wherein SEQ ID NO: 394 is a clonedesignated herein as “DNA77648-1688”. The start and stop codons areshown in bold and underlined font.

[2908]FIG. 230 shows the amino acid sequence (SEQ ID NO: 395) derivedfrom the coding sequence of SEQ ID NO: 394 shown in FIG. 229.

[2909]FIG. 231 shows a nucleotide sequence (SEQ ID NO: 396) of a nativesequence PRO1788 (UNQ850) cDNA, wherein SEQ ID NO: 396 is a clonedesignated herein as “DNA77652-2505”. The start and stop codons areshown in bold and underlined font.

[2910]FIG. 232 shows the amino acid sequence (SEQ ID NO: 397) derivedfrom the coding sequence of SEQ ID NO: 396 shown in FIG. 231.

[2911]FIG. 233 shows a nucleotide sequence (SEQ ID NO: 401) of a nativesequence PRO1801 (UNQ852) cDNA, wherein SEQ ID NO: 401 is a clonedesignated herein as “DNA83500-2506”. The start and stop codons areshown in bold and underlined font.

[2912]FIG. 234 shows the amino acid sequence (SEQ ID NO: 402) derivedfrom the coding sequence of SEQ ID NO: 401 shown in FIG. 233.

[2913]FIG. 235 shows a nucleotide sequence (SEQ ID NO: 405) of a nativesequence UCP4 cDNA, wherein SEQ ID NO: 405 is a clone designated hereinas “DNA77568-1626”. The start and stop codons are shown in bold andunderlined font.

[2914]FIG. 236 shows the amino acid sequence (SEQ ID NO: 406) derivedfrom the coding sequence of SEQ ID NO: 405 shown in FIG. 235.

[2915]FIG. 237 shows a nucleotide sequence (SEQ ID NO: 409) of a nativesequence PRO193 cDNA, wherein SEQ ID NO: 409 is a clone designatedherein as “DNA23322-1393”. The start and stop codons are shown in boldand underlined font.

[2916]FIG. 238 shows the amino acid sequence (SEQ ID NO: 410) derivedfrom the coding sequence of SEQ ID NO: 409 shown in FIG. 237.

[2917]FIG. 239 shows a nucleotide sequence (SEQ ID NO: 414) of a nativesequence PRO1130 cDNA, wherein SEQ ID NO: 414 is a clone designatedherein as “DNA59814-1486”. The start and stop codons are shown in boldand underlined font.

[2918]FIG. 240 shows the amino acid sequence (SEQ ID NO: 415) derivedfrom the coding sequence of SEQ ID NO: 414 shown in FIG. 239.

[2919]FIG. 241 shows a nucleotide sequence (SEQ ID NO: 422) of a nativesequence PRO1335 cDNA, wherein SEQ ID NO: 422 is a clone designatedherein as “DNA62812-1594”. The start and stop codons are shown in boldand underlined font.

[2920]FIG. 242 shows the amino acid sequence (SEQ ID NO: 423) derivedfrom the coding sequence of SEQ ID NO: 422 shown in FIG. 241.

[2921]FIG. 243 shows a nucleotide sequence (SEQ ID NO: 428) of a nativesequence PRO1329 cDNA, wherein SEQ ID NO: 428 is a clone designatedherein as “DNA66660-1585”. The start and stop codons are shown in boldand underlined font.

[2922]FIG. 244 shows the amino acid sequence (SEQ ID NO: 429) derivedfrom the coding sequence of SEQ ID NO: 428 shown in FIG. 243.

[2923]FIG. 245 shows a nucleotide sequence (SEQ ID NO: 430) of a nativesequence PRO1550 cDNA, wherein SEQ ID NO: 430 is a clone designatedherein as “DNA76393-1664”. The start and stop codons are shown in boldand underlined font.

[2924]FIG. 246 shows the amino acid sequence (SEQ ID NO: 431) derivedfrom the coding sequence of SEQ ID NO: 430 shown in FIG. 245.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS I. DEFINITIONS

[2925] The terms “PRO polypeptide” and “PRO” as used herein and whenimmediately followed by a numerical designation refer to variouspolypeptides, wherein the complete designation (i.e., PRO/number) refersto specific polypeptide sequences as described herein. The terms“PRO/number polypeptide” and “PRO/number” wherein the term “number” isprovided as an actual numerical designation as used herein encompassnative sequence polypeptides and polypeptide variants (which are furtherdefined herein). The PRO polypeptides described herein may be isolatedfrom a variety of sources, such as from human tissue types or fromanother source, or prepared by recombinant or synthetic methods.

[2926] A “native sequence PRO polypeptide” comprises a polypeptidehaving the same amino acid sequence as the corresponding PRO polypeptidederived from nature. Such native sequence PRO polypeptides can beisolated from nature or can be produced by recombinant or syntheticmeans. The term “native sequence PRO polypeptide” specificallyencompasses naturally-occurring truncated or secreted forms of thespecific PRO polypeptide (e.g., an extracellular domain sequence),naturally-occurring variant forms (e.g., alternatively spliced forms)and naturally-occurring allelic variants of the polypeptide. In variousembodiments of the invention, the native sequence PRO polypeptidesdisclosed herein are mature or full-length native sequence polypeptidescomprising the full-length amino acids sequences shown in theaccompanying figures. Start and stop codons are shown in bold font andunderlined in the figures. However, while the PRO polypeptide disclosedin the accompanying figures are shown to begin with methionine residuesdesignated herein as amino acid position 1 in the figures, it isconceivable and possible that other methionine residues located eitherupstream or downstream from the amino acid position 1 in the figures maybe employed as the starting amino acid residue for the PRO polypeptides.

[2927] The PRO polypeptide “extracellular domain” or “ECD” refers to aform of the PRO polypeptide which is essentially free of thetransmembrane and cytoplasmic domains. Ordinarily, a PRO polypeptide ECDwill have less than 1% of such transmembrane and/or cytoplasmic domainsand preferably, will have less than 0.5% of such domains. It will beunderstood that any transmembrane domains identified for the PROpolypeptides of the present invention are identified pursuant tocriteria routinely employed in the art for identifying that type ofhydrophobic domain. The exact boundaries of a transmembrane domain mayvary but most likely by no more than about 5 amino acids at either endof the domain as initially identified herein. Optionally, therefore, anextracellular domain of a PRO polypeptide may contain from about 5 orfewer amino acids on either side of the transmembranedomain/extracellular domain boundary as identified in the Examples orspecification and such polypeptides, with or without the associatedsignal peptide, and nucleic acid encoding them, are comtemplated by thepresent invention.

[2928] The approximate location of the “signal peptides” of the variousPRO polypeptides disclosed herein are shown in the present specificationand/or the accompanying figures. It is noted, however, that theC-terminal boundary of a signal peptide may vary, but most likely by nomore than about 5 amino acids on either side of the signal peptideC-terminal boundary as initially identified herein, wherein theC-terminal boundary of the signal peptide may be identified pursuant tocriteria routinely employed in the art for identifying that type ofamino acid sequence element (e.g., Nielsen et al., Prot. Eng. 10:1-6(1997) and von Heinje et al., Nucl. Acids. Res. 14:4683-4690 (1986)).Moreover, it is also recognized that, in some cases, cleavage of asignal sequence from a secreted polypeptide is not entirely uniform,resulting in more than one secreted species. These mature polypeptides,where the signal peptide is cleaved within no more than about 5 aminoacids on either side of the C-terminal boundary of the signal peptide asidentified herein, and the polynucleotides encoding them, arecontemplated by the present invention.

[2929] “PRO polypeptide variant” means an active PRO polypeptide asdefined above or below having at least about 80% amino acid sequenceidentity with a fall-length native sequence PRO polypeptide sequence asdisclosed herein, a PRO polypeptide sequence lacking the signal peptideas disclosed herein, an extracellular domain of a PRO polypeptide, withor without the signal peptide, as disclosed herein or any other fragmentof a full-length PRO polypeptide sequence as disclosed herein. Such PROpolypeptide variants include, for instance, PRO polypeptides wherein oneor more amino acid residues are added, or deleted, at the N- orC-terminus of the full-length native amino acid sequence. Ordinarily, aPRO polypeptide variant will have at least about 80% amino acid sequenceidentity, preferably at least about 81% amino acid sequence identity,more preferably at least about 82% amino acid sequence identity, morepreferably at least about 83% amino acid sequence identity, morepreferably at least about 84% amino acid sequence identity, morepreferably at least about 85% amino acid sequence identity, morepreferably at least about 86% amino acid sequence identity, morepreferably at least about 87% amino acid sequence identity, morepreferably at least about 88% amino acid sequence identity, morepreferably at least about 89% amino acid sequence identity, morepreferably at least about 90% amino acid sequence identity, morepreferably at least about 91% amino acid sequence identity, morepreferably at least about 92% amino acid sequence identity, morepreferably at least about 93% amino acid sequence identity, morepreferably at least about 94% amino acid sequence identity, morepreferably at least about 95% amino acid sequence identity, morepreferably at least about 96% amino acid sequence identity, morepreferably at least about 97% amino acid sequence identity, morepreferably at least about 98% amino acid sequence identity and mostpreferably at least about 99% amino acid sequence identity with afull-length native sequence PRO polypeptide sequence as disclosedherein, a PRO polypeptide sequence lacking the signal peptide asdisclosed herein, an extracellular domain of a PRO polypeptide, with orwithout the signal peptide, as disclosed herein or any otherspecifically defined fragment of a full-length PRO polypeptide sequenceas disclosed herein. Ordinarily, PRO variant polypeptides are at leastabout 10 amino acids in length, often at least about 20 amino acids inlength, more often at least about 30 amino acids in length, more oftenat least about 40 amino acids in length, more often at least about 50amino acids in length, more often at least about 60 amino acids inlength, more often at least about 70 amino acids in length, more oftenat least about 80 amino acids in length, more often at least about 90amino acids in length, more often at least about 100 amino acids inlength, more often at least about 150 amino acids in length, more oftenat least about 200 amino acids in length, more often at least about 300amino acids in length, or more.

[2930] “Percent (%) amino acid sequence identity” with respect to thePRO polypeptide sequences identified herein is defined as the percentageof amino acid residues in a candidate sequence that are identical withthe amino acid residues in the specific PRO polypeptide sequence, afteraligning the sequences and introducing gaps, if necessary, to achievethe maximum percent sequence identity, and not considering anyconservative substitutions as part of the sequence identity. Alignmentfor purposes of determining percent amino acid sequence identity can beachieved in various ways that are within the skill in the art, forinstance, using publicly available computer software such as BLAST,BLAST-2, ALIGN or Megalign (DNASTAR) software. Those skilled in the artcan determine appropriate parameters for measuring alignment, includingany algorithms needed to achieve maximal alignment over the full lengthof the sequences being compared. For purposes herein, however, % aminoacid sequence identity values are generated using the sequencecomparison computer program ALIGN-2, wherein the complete source codefor the ALIGN-2 program is provided in Table 1 below. The ALIGN-2sequence comparison computer program was authored by Genentech, Inc. andthe source code shown in Table 1 below has been filed with userdocumentation in the U. S. Copyright Office, Washington D.C., 20559,where it is registered under U.S. Copyright Registration No. TXU510087.The ALIGN-2 program is publicly available through Genentech, Inc., SouthSan Francisco, Calif. or may be compiled from the source code providedin Table 1 below. The ALIGN-2 program should be compiled for use on aUNIX operating system, preferably digital UNIX V4.0D. All sequencecomparison parameters are set by the ALIGN-2 program and do not vary.

[2931] In situations where ALIGN-2 is employed for amino acid sequencecomparisons, the % amino acid sequence identity of a given amino acidsequence A to, with, or against a given amino acid sequence B (which canalternatively be phrased as a given amino acid sequence A that has orcomprises a certain % amino acid sequence identity to, with, or againsta given amino acid sequence B) is calculated as follows:

100 times the fraction {fraction (X/Y)}

[2932] where X is the number of amino acid residues scored as identicalmatches by the sequence alignment program ALIGN-2 in that program'salignment of A and B, and where Y is the total number of amino acidresidues in B. It will be appreciated that where the length of aminoacid sequence A is not equal to the length of amino acid sequence B, the% amino acid sequence identity of A to B will not equal the % amino acidsequence identity of B to A. As examples of % amino acid sequenceidentity calculations using this method, Tables 2 and 3 demonstrate howto calculate the % amino acid sequence identity of the amino acidsequence designated “Comparison Protein” to the amino acid sequencedesignated “PRO”, wherein “PRO” represents the amino acid sequence of ahypothetical PRO polypeptide of interest, “Comparison Protein”represents the amino acid sequence of a polypeptide against which the“PRO” polypeptide of interest is being compared, and “X, “Y” and “Z”each represent different hypothetical amino acid residues.

[2933] Unless specifically stated otherwise, all % amino acid sequenceidentity values used herein are obtained as described in the immediatelypreceding paragraph using the ALIGN-2 computer program. However, % aminoacid sequence identity values may also be obtained as described below byusing the WU-BLAST-2 computer program (Altschul et al., Methods inEnzymology 266:460-480 (1996)). Most of the WU-BLAST-2 search parametersare set to the default values. Those not set to default values, i.e.,the adjustable parameters, are set with the following values: overlapspan=1, overlap fraction=0.125, word threshold (T)=11, and scoringmatrix=BLOSUM62. When WU-BLAST-2 is employed, a % amino acid sequenceidentity value is determined by dividing (a) the number of matchingidentical amino acid residues between the amino acid sequence of the PROpolypeptide of interest having a sequence derived from the native PROpolypeptide and the comparison amino acid sequence of interest (i.e.,the sequence against which the PRO polypeptide of interest is beingcompared which may be a PRO variant polypeptide) as determined byWU-BLAST-2 by (b) the total number of amino acid residues of the PROpolypeptide of interest. For example, in the statement “a polypeptidecomprising an the amino acid sequence A which has or having at least 80%amino acid sequence identity to the amino acid sequence B”, the aminoacid sequence A is the comparison amino acid sequence of interest andthe amino acid sequence B is the amino acid sequence of the PROpolypeptide of interest.

[2934] Percent amino acid sequence identity may also be determined usingthe sequence comparison program NCBI-BLAST2 (Altschul et al., NucleicAcids Res. 25:3389-3402 (1997)). The NCBI-BLAST2 sequence comparisonprogram may be downloaded from http://www.nim.nhn.nih.gov. NCBI-BLAST2uses several search parameters, wherein all of those search parametersare set to default values including, for example, unmask=yes,strand=all, expected occurrences=10, minimum low complexity length=15/5,multi-pass e-value=0.01, constant for multi-pass=25, dropoff for finalgapped alignment=25 and scoring matrix=BLOSUM62.

[2935] In situations where NCBI-BLAST2 is employed for amino acidsequence comparisons, the % amino acid sequence identity of a givenamino acid sequence A to, with, or against a given amino acid sequence B(which can alternatively be phrased as a given amino acid sequence Athat has or comprises a certain % amino acid sequence identity to, with,or against a given amino acid sequence B) is calculated as follows:

100 times the fraction {fraction (X/Y)}

[2936] where X is the number of amino acid residues scored as identicalmatches by the sequence alignment program NCBI-BLAST2 in that program'salignment of A and B, and where Y is the total number of amino acidresidues in B. It will be appreciated that where the length of aminoacid sequence A is not equal to the length of amino acid sequence B, the% amino acid sequence identity of A to B will not equal the % amino acidsequence identity of B to A.

[2937] “PRO variant polynucleotide” or “PRO variant nucleic acidsequence” means a nucleic acid molecule which encodes an active PROpolypeptide as defined below and which has at least about 80% nucleicacid sequence identity with a nucleotide acid sequence encoding afull-length native sequence PRO polypeptide sequence as disclosedherein, a full-length native sequence PRO polypeptide sequence lackingthe signal peptide as disclosed herein, an extracellular domain of a PROpolypeptide, with or without the signal peptide, as disclosed herein orany other fragment of a full-length PRO polypeptide sequence asdisclosed herein. Ordinarily, a PRO variant polynucleotide will have atleast about 80% nucleic acid sequence identity, more preferably at leastabout 81% nucleic acid sequence identity, more preferably at least about82% nucleic acid sequence identity, more preferably at least about 83%nucleic acid sequence identity, more preferably at least about 84%nucleic acid sequence identity, more preferably at least about 85%nucleic acid sequence identity, more preferably at least about 86%nucleic acid sequence identity, more preferably at least about 87%nucleic acid sequence identity, more preferably at least about 88%nucleic acid sequence identity, more preferably at least about 89%nucleic acid sequence identity, more preferably at least about 90%nucleic acid sequence identity, more preferably at least about 91%nucleic acid sequence identity, more preferably at least about 92%nucleic acid sequence identity, more preferably at least about 93%nucleic acid sequence identity, more preferably at least about 94%nucleic acid sequence identity, more preferably at least about 95%nucleic acid sequence identity, more preferably at least about 96%nucleic acid sequence identity, more preferably at least about 97%nucleic acid sequence identity, more preferably at least about 98%nucleic acid sequence identity and yet more preferably at least about99% nucleic acid sequence identity with a nucleic acid sequence encodinga full-length native sequence PRO polypeptide sequence as disclosedherein, a full-length native sequence PRO polypeptide sequence lackingthe signal peptide as disclosed herein, an extracellular domain of a PROpolypeptide, with or without the signal sequence, as disclosed herein orany other fragment of a full-length PRO polypeptide sequence asdisclosed herein. Variants do not encompass the native nucleotidesequence.

[2938] Ordinarily, PRO variant polynucleotides are at least about 30nucleotides in length, often at least about 60 nucleotides in length,more often at least about 90 nucleotides in length, more often at leastabout 120 nucleotides in length, more often at least about 150nucleotides in length, more often at least about 180 nucleotides inlength, more often at least about 210 nucleotides in length, more oftenat least about 240 nucleotides in length, more often at least about 270nucleotides in length, more often at least about 300 nucleotides inlength, more often at least about 450 nucleotides in length, more oftenat least about 600 nucleotides in length, more often at least about 900nucleotides in length, or more.

[2939] “Percent (%) nucleic acid sequence identity” with respect toPRO-encoding nucleic acid sequences identified herein is defined as thepercentage of nucleotides in a candidate sequence that are identicalwith the nucleotides in the PRO nucleic acid sequence of interest, afteraligning the sequences and introducing gaps, if necessary, to achievethe maximum percent sequence identity. Alignment for purposes ofdetermining percent nucleic acid sequence identity can be achieved invarious ways that are within the skill in the art, for instance, usingpublicly available computer software such as BLAST, BLAST-2, ALIGN orMegalign (DNASTAR) software. For purposes herein, however, % nucleicacid sequence identity values are generated using the sequencecomparison computer program ALIGN-2, wherein the complete source codefor the ALIGN-2 program is provided in Table 1 below. The ALIGN-2sequence comparison computer program was authored by Genentech, Inc. andthe source code shown in Table 1 below has been filed with userdocumentation in the U.S. Copyright Office, Washington D.C., 20559,where it is registered under U.S. Copyright Registration No. TXU510087.The ALIGN-2 program is publicly available through Genentech, Inc., SouthSan Francisco, Calif. or may be compiled from the source code providedin Table 1 below. The ALIGN-2 program should be compiled for use on aUNIX operating system, preferably digital UNIX V4.0D. All sequencecomparison parameters are set by the ALIGN-2 program and do not vary.

[2940] In situations where ALIGN-2 is employed for nucleic acid sequencecomparisons, the % nucleic acid sequence identity of a given nucleicacid sequence C to, with, or against a given nucleic acid sequence D(which can alternatively be phrased as a given nucleic acid sequence Cthat has or comprises a certain % nucleic acid sequence identity to,with, or against a given nucleic acid sequence D) is calculated asfollows:

100 times the fraction {fraction (W/Z)}

[2941] where W is the number of nucleotides scored as identical matchesby the sequence alignment program ALIGN-2 in that program's alignment ofC and D, and where Z is the total number of nucleotides in D. It will beappreciated that where the length of nucleic acid sequence C is notequal to the length of nucleic acid sequence D, the % nucleic acidsequence identity of C to D will not equal the % nucleic acid sequenceidentity of D to C. As examples of % nucleic acid sequence identitycalculations, Tables 4 and 5, demonstrate how to calculate the % nucleicacid sequence identity of the nucleic acid sequence designated“Comparison DNA” to the nucleic acid sequence designated “PRO-DNA”,wherein “PRO-DNA” represents a hypothetical PRO-encoding nucleic acidsequence of interest, “Comparison DNA” represents the nucleotidesequence of a nucleic acid molecule against which the “PRO-DNA” nucleicacid molecule of interest is being compared, and “N”, “L” and “V” eachrepresent different hypothetical nucleotides.

[2942] Unless specifically stated otherwise, all % nucleic acid sequenceidentity values used herein are obtained as described in the immediatelypreceding paragraph using the ALIGN-2 computer program. However, %nucleic acid sequence identity values may also be obtained as describedbelow by using the WU-BLAST-2 computer program (Altschul et al., Methodsin Enzymology 266:460-480 (1996)). Most of the WU-BLAST-2 searchparameters are set to the default values. Those not set to defaultvalues, i.e., the adjustable parameters, are set with the followingvalues: overlap span=1, overlap fraction =0.125, word threshold (T)=11,and scoring matrix=BLOSUM62. When WU-BLAST-2 is employed, a % nucleicacid sequence identity value is determined by dividing (a) the number ofmatching identical nucleotides between the nucleic acid sequence of thePRO polypeptide-encoding nucleic acid molecule of interest having asequence derived from the native sequence PRO polypeptide-encodingnucleic acid and the comparison nucleic acid molecule of interest (i.e.,the sequence against which the PRO polypeptide-encoding nucleic acidmolecule of interest is being compared which may be a variant PROpolynucleotide) as determined by WU-BLAST-2 by (b) the total number ofnucleotides of the PRO polypeptide-encoding nucleic acid molecule ofinterest. For example, in the statement “an isolated nucleic acidmolecule comprising a nucleic acid sequence A which has or having atleast 80% nucleic acid sequence identity to the nucleic acid sequenceB”, the nucleic acid sequence A is the comparison nucleic acid moleculeof interest and the nucleic acid sequence B is the nucleic acid sequenceof the PRO polypeptide-encoding nucleic acid molecule of interest.

[2943] Percent nucleic acid sequence identity may also be determinedusing the sequence comparison program NCBI-BLAST2 (Altschul et al.,Nucleic Acids Res. 25:3389-3402 (1997)). The NCBI-BLAST2 sequencecomparison program may be downloaded from http://www.ncbi.nlm.nih.gov.NCBI-BLAST2 uses several search parameters, wherein all of those searchparameters are set to default values including, for example, unmask=yes,strand=all, expected occurrences=10, minimum low complexity length=15/5,multi-pass e-value=0.01, constant for multi-pass=25, dropoff for finalgapped alignment=25 and scoring matrix=BLOSUM62.

[2944] In situations where NCBI-BLAST2 is employed for sequencecomparisons, the % nucleic acid sequence identity of a given nucleicacid sequence C to, with, or against a given nucleic acid sequence D(which can alternatively be phrased as a given nucleic acid sequence Cthat has or comprises a certain % nucleic acid sequence identity to,with, or against a given nucleic acid sequence D) is calculated asfollows:

100 times the fraction {fraction (W/Z)}

[2945] where W is the number of nucleotides scored as identical matchesby the sequence alignment program NCBI-BLAST2 in that program'salignment of C and D, and where Z is the total number of nucleotides inD. It will be appreciated that where the length of nucleic acid sequenceC is not equal to the length of nucleic acid sequence D, the % nucleicacid sequence identity of C to D will not equal the % nucleic acidsequence identity of D to C.

[2946] In other embodiments, PRO variant polynucleotides are nucleicacid molecules that encode an active PRO polypeptide and which arecapable of hybridizing, preferably under stringent hybridization andwash conditions, to nucleotide sequences encoding a full-length PROpolypeptide as disclosed herein. PRO variant polypeptides may be thosethat are encoded by a PRO variant polynucleotide.

[2947] The term “positives”, in the context of sequence comparisonperformed as described above, includes residues in the sequencescompared that are not identical but have similar properties (e.g. as aresult of conservative substitutions, see Table 6 below). For purposesherein, the % value of positives is determined by dividing (a) thenumber of amino acid residues scoring a positive value between the PROpolypeptide amino acid sequence of interest having a sequence derivedfrom the native PRO polypeptide sequence and the comparison amino acidsequence of interest (i.e., the amino acid sequence against which thePRO polypeptide sequence is being compared) as determined in theBLOSUM62 matrix of WU-BLAST-2 by (b) the total number of amino acidresidues of the PRO polypeptide of interest.

[2948] Unless specifically stated otherwise, the % value of positives iscalculated as described in the immediately preceding paragraph. However,in the context of the amino acid sequence identity comparisons performedas described for ALIGN-2 and NCBI-BLAST-2 above, includes amino acidresidues in the sequences compared that are not only identical, but alsothose that have similar properties. Amino acid residues that score apositive value to an amino acid residue of interest are those that areeither identical to the amino acid residue of interest or are apreferred substitution (as defined in Table 6 below) of the amino acidresidue of interest.

[2949] For amino acid sequence comparisons using ALIGN-2 or NCBI-BLAST2,the % value of positives of a given amino acid sequence A to, with, oragainst a given amino acid sequence B (which can alternatively bephrased as a given amino acid sequence A that has or comprises a certain% positives to, with, or against a given amino acid sequence B) iscalculated as follows:

100 times the fraction {fraction (X/Y)}

[2950] where X is the number of amino acid residues scoring a positivevalue as defined above by the sequence alignment program ALIGN-2 orNCBI-BLAST2 in that program's alignment of A and B, and where Y is thetotal number of amino acid residues in B. It will be appreciated thatwhere the length of amino acid sequence A is not equal to the length ofamino acid sequence B, the % positives of A to B will not equal the %positives of B to A.

[2951] “Isolated,” when used to describe the various polypeptidesdisclosed herein, means polypeptide that has been identified andseparated and/or recovered from a component of its natural environment.Contaminant components of its natural environment are materials thatwould typically interfere with diagnostic or therapeutic uses for thepolypeptide, and may include enzymes, hormones, and other proteinaceousor non-proteinaceous solutes. In preferred embodiments, the polypeptidewill be purified (1) to a degree sufficient to obtain at least 15residues of N-terminal or internal amino acid sequence by use of aspinning cup sequenator, or (2) to homogeneity by SDS-PAGE undernon-reducing or reducing conditions using Coomassie blue or, preferably,silver stain. Isolated polypeptide includes polypeptide in situ withinrecombinant cells, since at least one component of the PRO polypeptidenatural environment will not be present. Ordinarily, however, isolatedpolypeptide will be prepared by at least one purification step.

[2952] An “isolated” PRO polypeptide-encoding nucleic acid or otherpolypeptide-encoding nucleic acid is a nucleic acid molecule that isidentified and separated from at least one contaminant nucleic acidmolecule with which it is ordinarily associated in the natural source ofthe polypeptide-encoding nucleic acid. An isolated polypeptide-encodingnucleic acid molecule is other than in the form or setting in which itis found in nature. Isolated polypeptide-encoding nucleic acid moleculestherefore are distinguished from the specific polypeptide-encodingnucleic acid molecule as it exists in natural cells. However, anisolated polypeptide-encoding nucleic acid molecule includespolypeptide-encoding nucleic acid molecules contained in cells thatordinarily express the polypeptide where, for example, the nucleic acidmolecule is in a chromosomal location different from that of naturalcells.

[2953] The term “control sequences” refers to DNA sequences necessaryfor the expression of an operably linked coding sequence in a particularhost organism. The control sequences that are suitable for prokaryotes,for example, include a promoter, optionally an operator sequence, and aribosome binding site. Eukaryotic cells are known to utilize promoters,polyadenylation signals, and enhancers.

[2954] Nucleic acid is “operably linked” when it is placed into afunctional relationship with another nucleic acid sequence. For example,DNA for a presequence or secretory leader is operably linked to DNA fora polypeptide if it is expressed as a preprotein that participates inthe secretion of the polypeptide; a promoter or enhancer is operablylinked to a coding sequence if it affects the transcription of thesequence; or a ribosome binding site is operably linked to a codingsequence if it is positioned so as to facilitate translation. Generally,“operably linked” means that the DNA sequences being linked arecontiguous, and, in the case of a secretory leader, contiguous and inreading phase. However, enhancers do not have to be contiguous. Linkingis accomplished by ligation at convenient restriction sites. If suchsites do not exist, the synthetic oligonucleotide adaptors or linkersare used in accordance with conventional practice.

[2955] The term “antibody” is used in the broadest sense andspecifically covers, for example, single anti-PRO monoclonal antibodies(including agonist, antagonist, and neutralizing antibodies), anti-PROantibody compositions with polyepitopic specificity, single chainanti-PRO antibodies, and fragments of anti-PRO antibodies (see below).The term “monoclonal antibody” as used herein refers to an antibodyobtained from a population of substantially homogeneous antibodies,i.e., the individual antibodies comprising the population are identicalexcept for possible naturally-occurring mutations that may be present inminor amounts.

[2956] “Stringency” of hybridization reactions is readily determinableby one of ordinary skill in the art, and generally is an empiricalcalculation dependent upon probe length, washing temperature, and saltconcentration. In general, longer probes require higher temperatures forproper annealing, while shorter probes need lower temperatures.Hybridization generally depends on the ability of denatured DNA toreanneal when complementary strands are present in an environment belowtheir melting temperature. The higher the degree of desired homologybetween the probe and hybridizable sequence, the higher the relativetemperature which can be used. As a result, it follows that higherrelative temperatures would tend to make the reaction conditions morestringent, while lower temperatures less so. For additional details andexplanation of stringency of hybridization reactions, see Ausubel etal., Current Protocols in Molecular Biology, Wiley IntersciencePublishers, (1995).

[2957] “Stringent conditions” or “high stringency conditions”, asdefined herein, may be identified by those that: (1) employ low ionicstrength and high temperature for washing, for example 0.015 M sodiumchloride/0.0015 M sodium citrate/0.1% sodium dodecyl sulfate at 50° C.;(2) employ during hybridization a denaturing agent, such as formamide,for example, 50% (v/v) formamide with 0.1% bovine serum albumin/0.1%Ficoll/0.1% polyvinylpyrrolidone/50 mM sodium phosphate buffer at pH 6.5with 750 mM sodium chloride, 75 mM sodium citrate at 42° C.; or (3)employ 50% formamide, 5×SSC (0.75 M NaCl, 0.075 M sodium citrate), 50 mMsodium phosphate (pH 6.8), 0.1% sodium pyrophosphate, 5×Denhardt'ssolution, sonicated salmon sperm DNA (50 μg/ml), 0.1% SDS, and 10%dextran sulfate at 42° C., with washes at 42° C. in 0.2×SSC (sodiumchloride/sodium citrate) and 50% formamide at 55° C., followed by ahigh-stringency wash consisting of 0.1×SSC containing EDTA at 55° C.

[2958] “Moderately stringent conditions” may be identified as describedby Sambrook et al., Molecular Cloning: A Laboratory Manual, New York:Cold Spring Harbor Press, 1989, and include the use of washing solutionand hybridization conditions (e.g., temperature, ionic strength and %SDS) less stringent that those described above. An example of moderatelystringent conditions is overnight incubation at 37° C. in a solutioncomprising: 20% formamide, 5×SSC (150 mM NaCl, 15 mM trisodium citrate),50 mM sodium phosphate (pH 7.6), 5×Denhardt's solution, 10% dextransulfate, and 20 mg/nl denatured sheared salmon sperm DNA, followed bywashing the filters in 1×SSC at about 37-50° C. The skilled artisan willrecognize how to adjust the temperature, ionic strength, etc. asnecessary to accommodate factors such as probe length and the like.

[2959] The term “epitope tagged” when used herein refers to a chimericpolypeptide comprising a PRO polypeptide fused to a “tag polypeptide”.The tag polypeptide has enough residues to provide an epitope againstwhich an antibody can be made, yet is short enough such that it does notinterfere with activity of the polypeptide to which it is fused. The tagpolypeptide preferably also is fairly unique so that the antibody doesnot substantially cross-react with other epitopes. Suitable tagpolypeptides generally have at least six amino acid residues and usuallybetween about 8 and 50 amino acid residues (preferably, between about 10and 20 amino acid residues).

[2960] As used herein, the term “immunoadhesin” designates antibody-likemolecules which combine the binding specificity of a heterologousprotein (an “adhesin”) with the effector functions of immunoglobulinconstant domains. Structurally, the immunoadhesins comprise a fusion ofan amino acid sequence with the desired binding specificity which isother than the antigen recognition and binding site of an antibody(i.e., is “heterologous”), and an immunoglobulin constant domainsequence. The adhesin part of an immunoadhesin molecule typically is acontiguous amino acid sequence comprising at least the binding site of areceptor or a ligand. The immunoglobulin constant domain sequence in theimmunoadhesin may be obtained from any immunoglobulin, such as IgG-1,IgG-2, IgG-3, or IgG4 subtypes, IgA (including IgA-1 and IgA-2), IgE,IgD or IgM.

[2961] “Active” or “activity” for the purposes herein refers to form(s)of a PRO polypeptide which retain a biological and/or an immunologicalactivity of native or naturally-occurring PRO, wherein “biological”activity refers to a biological function (either inhibitory orstimulatory) caused by a native or naturally-occurring PRO other thanthe ability to induce the production of an antibody against an antigenicepitope possessed by a native or naturally-occurring PRO and an“immunological” activity refers to the ability to induce the productionof an antibody against an antigenic epitope possessed by a native ornaturally-occurring PRO.

[2962] The term “antagonist” is used in the broadest sense, and includesany molecule that partially or fully blocks, inhibits, or neutralizes abiological activity of a native PRO polypeptide disclosed herein. In asimilar manner, the term “agonist” is used in the broadest sense andincludes any molecule that mimics a biological activity of a native PROpolypeptide disclosed herein. Suitable agonist or antagonist moleculesspecifically include agonist or antagonist antibodies or antibodyfragments, fragments or amino acid sequence variants of native PROpolypeptides, peptides, antisense oligonucleotides, small organicmolecules, etc. Methods for identifying agonists or antagonists of a PROpolypeptide may comprise contacting a PRO polypeptide with a candidateagonist or antagonist molecule and measuring a detectable change in oneor more biological activities normally associated with the PROpolypeptide.

[2963] “Treatment” refers to both therapeutic treatment and prophylacticor preventative measures, wherein the object is to prevent or slow down(lessen) the targeted pathologic condition or disorder. Those in need oftreatment include those already with the disorder as well as those proneto have the disorder or those in whom the disorder is to be prevented.

[2964] “Chronic” administration refers to administration of the agent(s)in a continuous mode as opposed to an acute mode, so as to maintain theinitial therapeutic effect (activity) for an extended period of time.“Intermittent” administration is treatment that is not consecutivelydone without interruption, but rather is cyclic in nature.

[2965] “Mammal” for purposes of treatment refers to any animalclassified as a mammal, including humans, domestic and farm animals, andzoo, sports, or pet animals, such as dogs, cats, cattle, horses, sheep,pigs, goats, rabbits, etc. Preferably, the mammal is human.

[2966] Administration “in combination with” one or more furthertherapeutic agents includes simultaneous (concurrent) and consecutiveadministration in any order.

[2967] “Carriers” as used herein include pharmaceutically acceptablecarriers, excipients, or stabilizers which are nontoxic to the cell ormammal being exposed thereto at the dosages and concentrations employed.Often the physiologically acceptable carrier is an aqueous pH bufferedsolution. Examples of physiologically acceptable carriers includebuffers such as phosphate, citrate, and other organic acids;antioxidants including ascorbic acid; low molecular weight (less thanabout 10 residues) polypeptide; proteins, such as serum albumin,gelatin, or immunoglobulins; hydrophilic polymers such aspolyvinylpyrrolidone; amino acids such as glycine, glutamine,asparagine, arginine or lysine; monosaccharides, disaccharides, andother carbohydrates including glucose, mannose, or dextrins; chelatingagents such as EDTA; sugar alcohols such as mannitol or sorbitol;salt-forming counterions such as sodium; and/or nonionic surfactantssuch as TWEEN™, polyethylene glycol (PEG), and PLURONICS™.

[2968] “Antibody fragments” comprise a portion of an intact antibody,preferably the antigen binding or variable region of the intactantibody. Examples of antibody fragments include Fab, Fab′, F(ab′)₂, andFv fragments; diabodies; linear antibodies (Zapata et al., Protein Eng.8(10): 1057-1062 [1995]); single-chain antibody molecules; andmultispecific antibodies formed from antibody fragments.

[2969] Papain digestion of antibodies produces two identicalantigen-binding fragments, called “Fab” fragments, each with a singleantigen-binding site, and a residual “Fc” fragment, a designationreflecting the ability to crystallize readily. Pepsin treatment yieldsan F(ab′)₂ fragment that has two antigen-combining sites and is stillcapable of cross-linking antigen.

[2970] “Fv” is the minimum antibody fragment which contains a completeantigen-recognition and -binding site. This region consists of a dimerof one heavy- and one light-chain variable domain in tight, non-covalentassociation. It is in this configuration that the three CDRs of eachvariable domain interact to define an antigen-binding site on thesurface of the V_(H)-V_(L) dimer. Collectively, the six CDRs conferantigen-binding specificity to the antibody. However, even a singlevariable domain (or half of an Fv comprising only three CDRs specificfor an antigen) has the ability to recognize and bind antigen, althoughat a lower affinity than the entire binding site.

[2971] The Fab fragment also contains the constant domain of the lightchain and the first constant domain (CH1) of the heavy chain. Fabfragments differ from Fab′ fragments by the addition of a few residuesat the carboxy terminus of the heavy chain CH1 domain including one ormore cysteines from the antibody hinge region. Fab′-SH is thedesignation herein for Fab′ in which the cysteine residue(s) of theconstant domains bear a free thiol group. F(ab′)₂ antibody fragmentsoriginally were produced as pairs of Fab′ fragments which have hingecysteines between them. Other chemical couplings of antibody fragmentsare also known.

[2972] The “light chains” of antibodies (immunoglobulins) from anyvertebrate species can be assigned to one of two clearly distinct types,called kappa and lambda, based on the amino acid sequences of theirconstant domains.

[2973] Depending on the amino acid sequence of the constant domain oftheir heavy chains, immunoglobulins can be assigned to differentclasses. There are five major classes of immunoglobulins: IgA, IgD, IgE,IgG, and IgM, and several of these may be further divided intosubclasses (isotypes), e.g., IgG1, IgG2, IgG3, IgG4, IgA, and IgA2.

[2974] “Single-chain Fv” or “sFv” antibody fragments comprise the V_(H)and V_(L) domains of antibody, wherein these domains are present in asingle polypeptide chain. Preferably, the Fv polypeptide furthercomprises a polypeptide linker between the V_(H) and V_(L) domains whichenables the sFv to form the desired structure for antigen binding. For areview of sFv, see Pluckthun in The Pharmacology of MonoclonalAntibodies, vol. 113, Rosenburg and Moore eds., Springer-Verlag, NewYork, pp. 269-315 (1994).

[2975] The term “diabodies” refers to small antibody fragments with twoantigen-binding sites, which fragments comprise a heavy-chain variabledomain (V_(H)) connected to a light-chain variable domain (V_(L)) in thesame polypeptide chain (V_(H)-V_(L)). By using a linker that is tooshort to allow pairing between the two domains on the same chain, thedomains are forced to pair with the complementary domains of anotherchain and create two antigen-binding sites. Diabodies are described morefully in, for example, EP 404,097; WO 93/11161; and Hollinger et al.,Proc. Natl. Acad. Sci. USA, 90:6444-6448 (1993).

[2976] An “isolated” antibody is one which has been identified andseparated and/or recovered from a component of its natural environment.Contaminant components of its natural environment are materials whichwould interfere with diagnostic or therapeutic uses for the antibody,and may include enzymes, hormones, and other proteinaceous ornonproteinaceous solutes. In preferred embodiments, the antibody will bepurified (1) to greater than 95% by weight of antibody as determined bythe Lowry method, and most preferably more than 99% by weight, (2) to adegree sufficient to obtain at least 15 residues of N-terminal orinternal amino acid sequence by use of a spinning cup sequenator, or (3)to homogeneity by SDS-PAGE under reducing or nonreducing conditionsusing Coomassie blue or, preferably, silver stain. Isolated antibodyincludes the antibody in situ within recombinant cells since at leastone component of the antibody's natural environment will not be present.Ordinarily, however, isolated antibody will be prepared by at least onepurification step.

[2977] The word “label” when used herein refers to a detectable compoundor composition which is conjugated directly or indirectly to theantibody so as to generate a “labeled” antibody. The label may bedetectable by itself (e.g. radioisotope labels or fluorescent labels)or, in the case of an enzymatic label, may catalyze chemical alterationof a substrate compound or composition which is detectable.

[2978] By “solid phase” is meant a non-aqueous matrix to which theantibody of the present invention can adhere. Examples of solid phasesencompassed herein include those formed partially or entirely of glass(e.g., controlled pore glass), polysaccharides (e.g., agarose),polyacrylamides, polystyrene, polyvinyl alcohol and silicones. Incertain embodiments, depending on the context, the solid phase cancomprise the well of an assay plate; in others it is a purificationcolumn (e.g., an affinity chromatography column). This term alsoincludes a discontinuous solid phase of discrete particles, such asthose described in U.S. Pat. No. 4,275,149.

[2979] A “liposome” is a small vesicle composed of various types oflipids, phospholipids and/or surfactant which is useful for delivery ofa drug (such as a PRO polypeptide or antibody thereto) to a mammal. Thecomponents of the liposome are commonly arranged in a bilayer formation,similar to the lipid arrangement of biological membranes.

[2980] A “small molecule” is defined herein to have a molecular weightbelow about 500 Daltons.

TABLE 2 PRO XXXXXXXXXXXXXXX (Length = 15 amino acids) ComparisonXXXXXYYYYYYY (Length = 12 amino acids) Protein % amino acid sequenceidentity = (the number of identically matching amino acid residuesbetween the two polypeptide sequences as determined by ALIGN-2) dividedby (the total number of amino acid residues of the PRO polypeptide) = 5divided by 15 = 33.3%

[2981] TABLE 3 PRO XXXXXXXXXX (Length = 10 amino acids) ComparisonXXXXXYYYYYYZZYZ (Length = 15 amino acids) Protein % amino acid sequenceidentity = (the number of identically matching amino acid residuesbetween the two polypeptide sequences as determined by ALIGN-2) dividedby (the total number of amino acid residues of the PRO polypeptide) = 5divided by 10 = 50%

[2982] TABLE 4 PRO-DNA NNNNNNNNNNNNNN (Length = 14 nucleotides)Comparison NNNNNNLLLLLLLLLL (Length = 16 nucleotides) DNA % nucleic acidsequence identity = (the number of identically matching nucleotidesbetween the two nucleic acid sequences as determined by ALIGN-2) dividedby (the total number of nucleotides of the PRO-DNA nucleic acidsequence) = 6 divided by 14 = 42.9%

[2983] TABLE 5 PRO-DNA NNNNNNNNNNNN (Length = 12 nucleotides) ComparisonNNNNLLLVV (Length = 9 nucleotides) DNA % nucleic acid sequence identity= (the number of identically matching nucleotides between the twonucleic acid sequences as determined by ALIGN-2) divided by (the totalnumber of nucleotides of the PRO-DNA nucleic acid sequence) = 4 dividedby 12 = 33.3%

II. COMPOSITIONS AND METHODS OF THE INVENTION

[2984] The present invention provides newly identified and isolatednucleotide sequences encoding polypeptides referred to in the presentapplication as PRO polypeptides. In particular, cDNAs encoding variousPRO polypeptides have been identified and isolated, as disclosed infurther detail in the Examples below. It is noted that proteins producedin separate expression rounds may be given different PRO numbers but theUNQ number is unique for any given DNA and the encoded protein, and willnot be changed. However, for sake of simplicity, in the presentspecification the protein encoded by the full length native nucleic acidmolecules disclosed herein as well as all further native homologues andvariants included in the foregoing definition of PRO, will be referredto as “PRO/number”, regardless of their origin or mode of preparation.

[2985] As disclosed in the Examples below, various cDNA clones have beendeposited with the ATCC. The actual nucleotide sequences of those clonescan readily be determined by the skilled artisan by sequencing of thedeposited clone using routine methods in the art. The predicted aminoacid sequence can be determined from the nucleotide sequence usingroutine skill. For the PRO polypeptides and encoding nucleic acidsdescribed herein, Applicants have identified what is believed to be thereading frame best identifiable with the sequence information availableat the time.

A. Full-Length PRO Polypeptides

[2986] 1. PRO1560

[2987] Using the WU-BLAST2 sequence alignment computer program, thefull-length native sequence PRO1560 (shown in FIG. 2 and SEQ ID NO: 4)has certain amino acid sequence identity with Tspan-6, identified afterthe discovery of the present invention herein. Accordingly, it ispresently believed that PRO1560 disclosed in the present application isa newly identified member of the tetraspan family.

[2988] 2. PRO444

[2989] The DNA26846-1397 clone was isolated from a human fetal lunglibrary using a trapping technique which selects for nucleotidesequences encoding secreted proteins. Thus, the DNA26846-1397 cloneencodes a secreted factor. As far as is known, the DNA26846-1397sequence encodes a novel factor designated herein as PRO444. Using theWU-BLAST2 sequence alignment computer program, no significant sequenceidentity with known proteins was revealed.

[2990] 3. PRO1018

[2991] The DNA56107-1415 clone was isolated from a human ovary tumortissue library using a trapping technique which selects for nucleotidesequences encoding secreted proteins. As far as is known, theDNA56107-1415 sequence encodes a novel factor designated herein asPRO1018; using the WU-BLAST2 sequence alignment computer program, nosignificant sequence identities to any known proteins were revealed.

[2992] 4. PRO1773

[2993] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1773(shown in FIG. 8 and SEQ ID NO: 10) has certain amino acid sequenceidentity with a portion of the retinol dehydrogenase type II protein ofrattus norvegicus (ROH2_RAT). Accordingly, it is presently believed thatPRO1773 disclosed in the present application is a newly identifiedmember of the retinol dehydrogenase protein family and may possessactivity typical of that protein family.

[2994] 5. PRO1477

[2995] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1477 (shown in FIG. 10and SEQ ID NO: 12) has certain amino acid sequence identity with themannosyl-oligosaccharide 1,2-alpha-mannosidase protein (A54408).Accordingly, it is presently believed that PRO1477 disclosed in thepresent application is a newly identified member of the mannosidaseprotein family and may possess activity typical of the mannosidaseprotein family.

[2996] 6. PRO1478

[2997] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO 1478 (shown in FIG. 12 andSEQ ID NO: 17) has certain amino acid sequence identity withgalactosyltransferases. Accordingly, it is presently believed thatPRO1478 disclosed in the present application is a newly identifiedmember of the galactosyltransferase family and may possess at least oneshared mechanism with other members of this family.

[2998] 7. PRO831

[2999] The DNA56862-1343 clone was isolated from a human uterus libraryusing a trapping technique which selects for nucleotide sequencesencoding secreted proteins. Thus, the DNA56862-1343 clone does encode asecreted factor. As far as is known, the DNA56862-1343 sequence encodesa novel factor designated herein as PRO831; using the WU-BLAST2 sequencealignment computer program, no sequence identities to any known proteinswere revealed.

[3000] 8. PRO1113

[3001] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1113 (shown in FIG. 16 andSEQ ID NO: 24) has certain amino acid sequence identity with LIG-1 andSLIT. Accordingly, it is presently believed that PRO1113 disclosed inthe present application is a newly identified member of the leucine richrepeat family and may possess protein-protein interaction activity as istypical of this family.

[3002] 9. PRO1194

[3003] As far as is known, the DNA57841-1522 sequence encodes a novelfactor designated herein as PRO1194; using WU-BLAST2 sequence alignmentcomputer programs, limited sequence identities to known proteins wererevealed.

[3004] 10. PRO1110

[3005] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1110 (shown in FIG. 20and SEQ ID NO: 31) has certain amino acid sequence identity with themurine myeloid upregulated protein. Accordingly, it is presentlybelieved that PRO1110 disclosed in the present application is a newlyidentified member of the myeloid upregulated protein family and maypossess activity typical of that family.

[3006] 11. PRO1378

[3007] The DNA58730-1607 clone was isolated from a bone marrow libraryusing a trapping technique which selects for nucleotide sequencesencoding secreted proteins. Thus, the DNA58730-1607 clone encodes asecreted factor. As far as is known, the DNA58730-1607 sequence encodesa novel factor designated herein as PRO1378. WU-BLAST2 sequencealignment computer programs revealed some sequence identities betweenthe amino acid sequence of PRO1378 with known proteins. However, theywere determined to not be significant.

[3008] 12. PRO1481

[3009] As far as is known, the DNA58732-1650 sequence encodes a novelfactor designated herein as PRO 1481. Using WU-BLAST2 sequence alignmentcomputer programs, only some sequence identities to known proteins wererevealed.

[3010] 13. PRO1189

[3011] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1189 (shown in FIG. 26 andSEQ ID NO: 43) has certain amino acid sequence identity with the aminoacid sequence of an E25 protein designated “MUSE25A_(—)1 in the Dayhoffdatabase. Accordingly, it is presently believed that PRO1189 disclosedin the present application is a newly identified member of the E25protein family and may possess activity or properties typical of thatfamily.

[3012] 14. PRO1415

[3013] The DNA58852-1637 clone was isolated from a diseased humanprostate tissue library using a trapping technique which selects fornucleotide sequences encoding secreted proteins. As far as is known, theDNA58852-1637 sequence encodes a novel factor designated herein asPRO1415; using the WU-BLAST2 sequence alignment computer program, nosignificant sequence identities to any known proteins were revealed.

[3014] 15. PRO1411

[3015] As far as is known, the DNA59212-1627 sequence encodes a novelfactor designated herein as PRO1411. However, using WU-BLAST2 sequencealignment computer programs, some sequence identities to known proteinswere revealed.

[3016] 16. PRO1295

[3017] As far as is known, the DNA59218-1559 sequence encodes a novelfactor designated herein as PRO1295. Using WU-BLAST2 sequence alignmentcomputer programs, only some sequence identities to known proteins wererevealed.

[3018] 17. PRO1359

[3019] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1359 (shown in FIG. 34 andSEQ ID NO: 56) has certain amino acid sequence identity withN-acetylgalactosamine alpha-2, 6-sialyltransferase. Accordingly, it ispresently believed that PRO1359 disclosed in the present application isa newly identified member of the sialyltransferase family and maypossess transferase activity typical of this family.

[3020] 18. PRO1190

[3021] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1190 (shown in FIG. 36 andSEQ ID NO: 58) has certain amino acid sequence identity with both ratand human CDO. Accordingly, it is presently believed that PRO1190disclosed in the present application is a newly identified member of theCDO family and may possess cell adhesion activity typical of the CDOfamily.

[3022] 19. PRO1772

[3023] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1772(shown in FIG. 38 and SEQ ID NO: 63) has certain amino acid sequenceidentity with a human microsomal dipeptidase protein (P_R13857).Accordingly, it is presently believed that PRO1772 disclosed in thepresent application is a newly identified member of the peptidaseprotein family and may possess activity typical of that protein family.

[3024] 20. PRO1248

[3025] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1248 (shown in FIG. 40and SEQ ID NO: 68) has amino acid sequence identity with the PUT-2protein (AF026198_(—)5). Accordingly, it is presently believed thatPRO1248 disclosed in the present application is a newly PUT-2 homologand may possess activity typical of the PUT-2 protein.

[3026] 21. PRO1316

[3027] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1316 (shown in FIG. 42 andSEQ ID NO: 70) has certain amino acid sequence identity with murinedickkopf. Accordingly, it is presently believed that PRO1316 disclosedin the present application is a newly identified member of the dickkopffamily and may possess the ability to cause head induction from theSpemann organizer and/or Wnt antagonism.

[3028] 22. PRO1197

[3029] As far as is known, the DNA60611-1524 sequence encodes a novelfactor designated herein as PRO1197. Using WU-BLAST2 sequence alignmentcomputer programs, only some sequence identities to known proteins wererevealed as further described in the examples.

[3030] 23. PRO1293

[3031] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1293 (shown in FIG. 46and SEQ ID NO: 77) has certain amino acid sequence identity with thehuman Ig heavy chain V region protein (HSVCD54_(—)1). Accordingly, it ispresently believed that PRO1293 disclosed in the present application isa newly identified member of the Ig superfamily of proteins andfragments thereof and may possess activity typical of that family.

[3032] 24. PRO1380

[3033] The DNA60740-1615 clone was isolated from a human retina library.As far as is known, the DNA60740-1615 sequence encodes a novelmulti-span transmembrane polypeptide designated herein as PRO1380. UsingWU-BLAST2 sequence alignment computer programs, some sequence identitywith known proteins were revealed.

[3034] 25. PRO1265

[3035] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1265 (shown in FIG. 50 andSEQ ID NO: 84) has certain amino acid sequence identity with the FIG. 1polypeptide designated “MMU70429_(—)1” in the Dayhoff database (version35.45 SwissProt 35). Accordingly, it is presently believed that PRO1265disclosed in the present application is a newly identified member of theFIG. 1 family and may possess activity typical of the FIG. 1polypeptide, including activation by interleukin-4.

[3036] 26. PRO1250

[3037] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1250 (shown in FIG. 52and SEQ ID NO: 86) has certain amino acid sequence identity with thehuman long chain fatty acid CoA ligase protein (LCFB_HUMAN).Accordingly, it is presently believed that PRO1250 disclosed in thepresent application is a newly identified long chain fatty acid CoAligase homolog that may have activity typical of long chain fatty acisCoA ligase.

[3038] 27. PRO1475

[3039] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1475 (shown in FIG. 54and SEQ ID NO: 88) has certain amino acid sequence identity with aportion of the mouse alpha-3-D-mannosidebeat-1,2-N-acetylglucosaminyltransferase I protein. Accordingly, it ispresently believed that PRO1475 disclosed in the present application isa newly identified member of the N-acetylglucosaminyltransferase proteinfamily and may possess activity typical of that protein family.

[3040] 28. PRO1377

[3041] As described herein, WU-BLAST2 sequence alignment computerprograms were used to determine the sequence identity of the PRO1377amino acid sequence with the amino acid sequences of known proteins.While some sequence identities were revealed, they were determined tonot be significant. Accordingly, as far as is known, the DNA61608sequence encodes a novel transmembrane protein designated herein asPRO1377.

[3042] 29. PRO1326

[3043] The DNA62808-1582 clone is believed to encode a secreted factor.As far as is known, the DNA62808-1582 sequence encodes a novel factordesignated herein as PRO1326; using WU-BLAST2 sequence alignmentcomputer programs, sequence identities to known proteins were revealedbut determined not to be significant.

[3044] 30. PRO1249

[3045] The DNA62809-1531 clone was isolated from a human colon tumortissue library using a trapping technique which selects for nucleotidesequences encoding secreted proteins. As far as is known, theDNA62809-1531 sequence encodes a novel factor designated herein asPRO1249; using the WU-BLAST2 sequence alignment computer program, nosequence identities to any known proteins were revealed.

[3046] 31. PRO1315

[3047] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1315 (shown in FIG. 62and SEQ ID NO: 104) has certain amino acid sequence identity with theclass II cytokine receptor 4 protein of mus musculus (MMU53696_(—)1).Accordingly, it is presently believed that PRO1315 disclosed in thepresent application is a newly identified member of the cytokine reeptorprotein family and may possess activity typical of that family.

[3048] 32. PRO1599

[3049] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1599 (shown in FIG. 64 andSEQ ID NO: 111) has certain amino acid sequence identity with Dayhoffsequence “CFAD_PIG”. Accordingly, it is presently believed that PRO1599disclosed in the present application is a newly identified member of theGranzyme M family and may possess activity or properties typical of theGranzyme M family.

[3050] 33. PRO1430

[3051] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1430 (shown in FIG. 66 andSEQ ID NO: 116) has certain amino acid sequence identity prostatespecific reductase (designated “P_W03198” in the Dayhoff database).Accordingly, it is presently believed that PRO1430 disclosed in thepresent application is a newly identified member of the reductase familyand may possess activity typical of members of the reductase family.

[3052] 34. PRO1374

[3053] As far as is known, the DNA64849-1604 sequence encodes a novelfactor designated herein as PRO1374; using WU-BLAST2 sequence alignmentcomputer programs, some sequence identities to known proteins such asthe human alpha subunit of P4HA were revealed. Therefore, it is believedthat PRO1374 is related to P4HA and may share one or more mechanisms.

[3054] 35. PRO1311

[3055] The DNA64863-1573 clone was isolated from human aorticendothelial cells and is believed to encode a novel transmembranepolypeptide designated herein as PRO1311. Using WU-BLAST2 sequencealignment computer programs, some sequence identities with knownproteins were revealed, but were determined to not be significant.

[3056] 36. PRO1357

[3057] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1357 (shown in FIG. 72and SEQ ID NO: 128) has certain amino acid sequence identity with thevon Ebner minor salivary gland protein of mus musculus (MMU46068_(—)1).Accordingly, it is presently believed that PRO1357 disclosed in thepresent application is a newly identified von Ebner minor salivary glandprotein homolog.

[3058] 37. PRO1244

[3059] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1244 (shown in FIG. 74 andSEQ ID NO: 130) has certain amino acid sequence identity with a knownimplantation-associated protein designated “AF008554_(—)1” on theDayhoff database (version 35.45 SwissProt35). Accordingly, it ispresently believed that PRO 1244 disclosed in the present application isa newly identified member of the implantation-associated protein familyand may possess attachment activity typical of that protein family.

[3060] 38. PRO1246

[3061] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1246 (shown in FIG. 76and SEQ ID NO: 132) has certain amino acid sequence identity with themurine bone-related sulphatase-like precursor protein (P_R51355).Accordingly, it is presently believed that PRO1246 disclosed in thepresent application is a newly identified bone-related sulphatasehomolog and may possess activity typical of bone-related sulfatase.

[3062] 39. PRO1356

[3063] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1356 (shown in FIG. 78and SEQ ID NO: 134) has certain amino acid sequence identity with theCPE-receptor protein of mus musculus (AB000713_(—)1). Accordingly, it ispresently believed that PRO1356 disclosed in the present application isa newly identified member of the CPE receptor family and may possessactivity typical of that family.

[3064] 40. PRO1275

[3065] As far as is known, the DNA64888-1542 sequence encodes a novelfactor designated herein as PRO1275. Using WU-BLAST2 sequence alignmentcomputer programs, some sequence identities to known proteins wererevealed.

[3066] 41. PRO1274

[3067] As far as is known, the DNA64889-1541 sequence encodes a novelfactor designated herein as PRO1274. Using WU-BLAST2 sequence alignmentcomputer programs, some sequence identities to known proteins wererevealed.

[3068] 42. PRO1412

[3069] The DNA64897-1628 clone is believed to be a secreted factor. Asfar as is known, the DNA64897-1628 sequence encodes a novel factordesignated herein as PRO1412; using WU-BLAST2 sequence alignmentcomputer programs, sequence identities to known proteins were revealedbut determined not to be significant.

[3070] 43. PRO1557

[3071] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1557 (shown in FIG. 86; SEQID NO: 142) has certain amino acid sequence identity chordin proteindesignated AF034606_(—)1 in the Dayhoff database. Accordingly, it ispresently believed that PRO1557 disclosed in the present application isa newly identified member of the chordin family and may possess activitytypical of the chordin family.

[3072] 44. PRO1286

[3073] The DNA64903- 1553 clone identified using techniques whichselects for nucleotide sequences encoding secreted proteins. As far asis known, the DNA64903 sequence encodes a novel secreted factordesignated herein as PRO1286. Using WU-BLAST2 sequence alignmentcomputer programs, some sequence identities to known proteins wererevealed; however, it was determined that they were not significant.

[3074] 45. PRO1294

[3075] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1294 (shown in FIG. 90and SEQ ID NO: 146) has certain amino acid sequence identity with theneuronal olfactomedin-related ER localized protein of the rat (I73636).Accordingly, it is presently believed that PRO1294 disclosed in thepresent application is a newly identified olfactomedin homolog and maypossess activity typical of that protein.

[3076] 46. PRO1347

[3077] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1347 (shown in FIG. 92 andSEQ ID NO: 148) has certain amino acid sequence identity withbutyrophilin. Moreover, there is a transmembrane domain approximately inthe middle of the sequence as is typical of butyrophilins. Accordingly,it is presently believed that PRO1347 disclosed in the presentapplication is a newly identified member of the butyrophilin family andmay play a role in the budding and release of milk-fat glubules duringlactation.

[3078] 47. PRO1305

[3079] The DNA64952-1568 clone was isolated from a human fetal kidneylibrary using a trapping technique which selects for nucleotidesequences encoding secreted proteins. Thus, the DNA64952-1568 clone doesencode a secreted factor. As far as is known, the DNA64952-1568 sequenceencodes a novel factor designated herein as PRO1305; using the WU-BLAST2sequence alignment computer program, no sequence identities to any knownproteins were revealed.

[3080] 48. PRO1273

[3081] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1273 (shown in FIG. 96 andSEQ ID NO: 158) has certain amino acid sequence identity with alipocalin precursor. Moreover, FIG. 96 shows that PRO1273 has a motifconserved in lipocalins. Accordingly, it is presently believed thatPRO1273 disclosed in the present application is a newly identifiedmember of the lipocalin family and shares at least one mechanism withlipocalins.

[3082] 49. PRO1302

[3083] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1302 (shown in FIG. 98 andSEQ ID NO: 160) has certain amino acid sequence identity with CD33L1 andCD33L2. Accordingly, it is presently believed that PRO1302 disclosed inthe present application is a newly identified member of the sialoadhesinfamily and possesses characteristics typical of this family.Specifically, PR01302 may be involved in cancer, inflammation,hemopoisis, neuronal development and/or immunity.

[3084] 50. PRO1283

[3085] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1283 (shown in FIG. 100and SEQ ID NO: 162) has certain amino acid sequence identity with therat odorant binding protein homolog OBP-II precursor (A40464).Accordingly, it is presently believed that PRO1283 disclosed in thepresent application is a newly odorant binding protein and may possessactivity typical of the odorant binding proteins.

[3086] 51. PRO1279

[3087] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1279 (shown in FIG. 102and SEQ ID NO: 170) has certain amino acid sequence identity with themouse neuropsin protein (I56559). Accordingly, it is presently believedthat PRO1279 disclosed in the present application is a newly identifiedneuropsin homolog and may possess activity typical of the neuropsinprotein.

[3088] 52. PRO1304

[3089] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1304 (shown in FIG. 104and SEQ ID NO: 180) has certain amino acid sequence identity with theFK-506 binding protein of mus musculus (AF040252_(—)1). Accordingly, itis presently believed that PRO1304 disclosed in the present applicationis a newly identified member of the FK506 binding protein family and maypossess activity typical of that family.

[3090] 53. PRO1317

[3091] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1317 (shown in FIG. 106 andSEQ ID NO: 189) has certain amino acid sequence identity with human CD97protein. Accordingly, it is presently believed that PRO1317 disclosed inthe present application is a leukocyte antigen that may be involved inleukocyte activation.

[3092] 54. PRO1303

[3093] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1303 (shown in FIG. 108 andSEQ ID NO: 194) has certain amino acid sequence identity with neuropsin.Accordingly, it is presently believed that PRO1303 disclosed in thepresent application is a newly identified member of the serine proteasefamily and may possess catabolic activity typical of this family.

[3094] 55. PRO1306

[3095] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1306 (shown in FIG. 110 andSEQ ID NO: 196) has certain amino acid sequence identity with Dayhoffsequence no. AIF1_HUMAN. Accordingly, it is presently believed thatPRO1306 disclosed in the present application is a newly identifiedmember of the AIF1/daintain family and may possess activity andproperties typical of AIF1/daintain.

[3096] 56. PRO1336

[3097] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1336 (shown in FIG. 112 andSEQ ID NO: 198) has certain amino acid sequence identity with slit.Accordingly, it is presently believed that PRO1336 disclosed in thepresent application is a newly identified member of the EGF-repeatfamily and may possess protein interaction mediation activity.

[3098] 57. PRO1278

[3099] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1278 (shown in FIG. 114 andSEQ ID NO: 203) has certain amino acid sequence identity lysozyme c-1precursor designated “LYC1_ANAPL” in the Dayhoff database. Accordingly,it is presently believed that PRO1278 disclosed in the presentapplication is a newly identified member of the lysozyme family and maypossess hydrolytic and other activity typical of the lysozyme family.

[3100] 58. PRO1298

[3101] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1298 (shown in FIG. 116 andSEQ ID NO: 210) has certain amino acid sequence identity withglycosyltransferase alg2. Accordingly, it is presently believed thatPRO1298 disclosed in the present application is a newly identifiedmember of the glycosyltransferase family and may share at least onemechanism with members of this family.

[3102] 59. PRO1301

[3103] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1301 (shown in FIG. 118 andSEQ ID NO: 212) has consistent amino acid sequence identity withcytochrome P450 proteins. Accordingly, it is presently believed thatPRO1301 disclosed in the present application is a newly identifiedmember of the cytochrome P450 family and may possess monooxygenaseactivity typical of the cytochrome P450 family.

[3104] 60. PRO1268

[3105] As far as is known, the DNA66519-1535 sequence encodes a noveltransmembrane polypeptide factor designated herein as PRO1268. UsingWU-BLAST2 sequence alignment computer programs, sequence identity to aknown protein was revealed, but determined to not be significant.

[3106] 61. PRO1269

[3107] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1269 (shown in FIG. 122 andSEQ ID NO: 216) has certain amino acid sequence identity a bovinegranulocyte peptide A precursor, designated “P_W23722” on the Dayhoffdatabase (version 35.45 SwissProt 35). Accordingly, it is presentlybelieved that PRO1269 disclosed in the present application is a newlyidentified member of the granulocyte A peptide family and may possessmicrobial activity typical of that family of peptides.

[3108] 62. PRO1327

[3109] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1327 (shown in FIG. 124and SEQ ID NO: 218) has certain amino acid sequence identity with therat neurexophilin-1 protein (NPH1_RAT). Accordingly, it is presentlybelieved that PRO1327 disclosed in the present application is a newlyidentified member of the neurexophilin protein family and may possessactivity typical of that protein family.

[3110] 63. PRO1382

[3111] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1382 (shown in FIG. 126 andSEQ ID NO: 220) has certain amino acid sequence identity with the aminoacid sequence of a known cerebellin-like glycoprotein designated“CERL_RAT”0 in the Dayhoff database. Accordingly, it is presentlybelieved that PRO1382 disclosed in the present application is a newlyidentified member of the cerebellin family of neuropeptides and maypossess activity and properties typical of cerebellin.

[3112] 64. PRO1328

[3113] The DNA66658-1584 clone was isolated from a human diseasedprostate tissue library using a trapping technique which selects fornucleotide sequences encoding proteins. As far as is known, theDNA66658-1584 sequence encodes a novel factor designated herein asPRO1328; using the WU-BLAST2 sequence alignment computer program, nosignificant sequence identities to any known proteins were revealed.

[3114] 65. PRO1325

[3115] The DNA66659-1593 clone was isolated from a human thymus tissuelibrary using a trapping technique which selects for nucleotidesequences encoding proteins. As far as is known, the DNA66659-1593sequence encodes a novel factor designated herein as PRO1325; using theWU-BLAST2 sequence alignment computer program, no sequence identities toany known proteins were revealed.

[3116] 66. PRO1340

[3117] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1340 (shown in FIG. 132 andSEQ ID NO: 229) has certain amino acid sequence identity with Dayhoffsequence no. 146536. Accordingly, it is presently believed that PRO1340disclosed in the present application is a newly identified member of thecadherin family and may possess activity and properties typical of thecadherin family.

[3118] 67. PRO1339

[3119] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1339 (shown in FIG. 134 andSEQ ID NO: 234) has certain amino acid sequence identity with humanpancreatic carboxypeptidase and carboxypeptidase a1. Accordingly, it ispresently believed that PRO1339 disclosed in the present application isa newly identified member of the carboxypeptidase family and possessescaboxypeptidase activity.

[3120] 68. PRO1337

[3121] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1337 (shown in FIG. 136 andSEQ ID NO: 236) has certain amino acid sequence identity with a humanTBG identified as “THBG_HUMAN” in the Dayhoff database. Accordingly, itis presently believed that PRO1337 disclosed in the present applicationis a newly identified member of the TBG family and may possess thyroidhormone transport capability and have other

[3122] 69. PRO1342

[3123] The DNA66674-1599 clone was isolated from human esophagealtissue. As described in further detail below, using WU-BLAST2 sequencealignment computer programs, some sequence identities to known proteinswere revealed. The DNA66674-1599 clone appears to encode for a noveltransmembrane polypeptide.

[3124] 70. PRO1343

[3125] The DNA66675-1587 clone was isolated from a human smooth musclecell tissue library using a trapping technique which selects fornucleotide sequences encoding secreted proteins. Thus, the DNA66675-1587clone does encode a secreted factor. As far as is known, theDNA66675-1587 sequence encodes a novel factor designated herein asPRO1343; using the WU-BLAST2 sequence alignment computer program, nosignificant sequence identities to any known proteins were revealed.

[3126] 71. PRO1480

[3127] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1480 (shown in FIG. 142 andSEQ ID NO: 253) has certain amino acid sequence identity with Dayhoffsequence no. 148746. Accordingly, it is presently believed that PRO1480disclosed in the present application is a newly identified member of theSemaphorin C family

[3128] 72. PRO1487

[3129] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1487 (FIG. 144; SEQ ID NO:260) has certain amino acid sequence identity with a radical fringeprotein designated GGU82088_(—)1 on the Dayhoff database. Accordingly,it is presently believed that PRO1487 disclosed in the presentapplication is a newly identified member of the fringe family and maypossess activity typical of the fringe family.

[3130] 73. PRO1418

[3131] As far as is known, the DNA68864-1629 sequence encodes a novelfactor designated herein as PRO1418. Using WU-BLAST2 sequence alignmentcomputer programs, sequence identities to known proteins were minimal.

[3132] 74. PRO1472

[3133] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1472 (shown in FIG. 148 andSEQ ID NO: 267) has certain amino acid sequence identity withbutyrophilin. Accordingly, it is presently believed that PRO1472disclosed in the present application is a newly identified member of thebutyrophilin family and may possess involvement in lactation.

[3134] 75. PRO1461

[3135] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1461 (shown in FIG. 150 andSEQ ID NO: 269) has certain amino acid sequence identity thetrypsin-like enzyme identified as “P_R89435” on the Dayhoff database.Accordingly, it is presently believed that PRO1461 disclosed in thepresent application is a newly identified member of the serine proteasefamily and may possess serine protease activity, and more particularly,may possess enzymatic activity typical of other trypsin-like enzymes.Homology was also found to exist between the PRO1461 amino acid sequenceand other trypsin-like enzymes and serine proteases in the Dayhoffdatabase.

[3136] 76. PRO1410

[3137] The DNA68874-1622 clone was isolated from a human brainmeningioma tissue library using a trapping technique which selects fornucleotide sequences encoding proteins. As far as is known, theDNA68874-1622 sequence encodes a novel factor designated herein asPRO1410; using the WU-BLAST2 sequence alignment computer program, nosequence identities to any known proteins were revealed.

[3138] 77. PRO1568

[3139] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1568 (shown in FIG. 154 andSEQ ID NO: 273) has certain amino acid sequence identity to tetraspan 5and tetraspan 4. Accordingly, it is presently believed that PRO1568disclosed in the present application is a newly identified member of thetetraspanin family and may possess molecular facilitator activitytypical of this family.

[3140] 78. PRO1570

[3141] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1570 (shown in FIG. 156 andSEQ ID NO: 275) has certain amino acid sequence identity with SP60;however, for the first time, the first 199 amino acids (or aminoterminal end) of that protein are identified and presented herein.Accordingly, it is presently believed that PRO1570 disclosed in thepresent application is a newly identified member of the serine proteasefamily and is involved in carcinoma.

[3142] 79. PRO1317

[3143] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1317 (shown in FIG. 158 andSEQ ID NO: 277) has certain amino acid sequence identity with a knownsemaphorin B protein, designated “I48745” on the Dayhoff database.Accordingly, it is presently believed that PRO1317 disclosed in thepresent application is a newly identified member of the semaphoringlycoprotein family and may possess activity or properties typical ofsemaphorins.

[3144] 80. PRO1780

[3145] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1780 (shown in FIG. 160 andSEQ ID NO: 282) has certain amino acid sequence identity with a knownglucuronosyltransferase designated “UDA2_RABIT” in the Dayhoff database.Accordingly, it is presently believed that PRO1780 disclosed in thepresent application is a newly identified member of theglucuronosyltransferase family and may possess enzymatic activity andother properties typical of the glucuronosyltransferase family.

[3146] 81. PRO1486

[3147] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1486 (shown in FIG. 162 andSEQ ID NO: 287) has certain amino acid sequence identity with cerebellin1 precursor. Accordingly, it is presently believed that PRO1486disclosed in the present application is a newly identified member of thecerebellin family and shares at least one mechanism with cerebellin.

[3148] 82. PRO1433

[3149] The DNA71184-1634 clone was isolated from a human adrenal glandtissue library using a trapping technique which selects for nucleotidesequences encoding proteins. As far as is known, the DNA71184-1634sequence encodes a novel factor designated herein as PRO1433; using theWU-BLAST2 sequence alignment computer program, no sequence identities toany known proteins were revealed.

[3150] 83. PRO1490

[3151] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1490(shown in FIG. 166 and SEQ ID NO: 297) has certain amino acid sequenceidentity with a portion of the 1-acyl-sn-glycerol-3-phosphateacyltransferase protein (S60478). Accordingly, it is presently believedthat PRO1490 disclosed in the present application is a newly identifiedmember of the acyltransferase protein family and may possess activitytypical of 1-acyl-sn-glycerol-3-phosphate acyltransferase proteins.

[3152] 84. PRO1482

[3153] The DNA71234-1651 clone was isolated from a human adrenal glandlibrary using a trapping technique which selects for nucleotidesequences encoding secreted proteins. Thus, the DNA71234-1651 clone doesencode a secreted factor. As far as is known, the DNA71234-1651 sequenceencodes a novel factor designated herein as PRO1482; using the WU-BLAST2sequence alignment computer program, no sequence identities to any knownproteins were revealed.

[3154] 85. PRO1446

[3155] As far as is known, the DNA71277-1636 sequence encodes a novelfactor designated herein as PRO1446. Using WU-BLAST2 sequence alignmentcomputer programs, minimal sequence identities to known proteins wererevealed.

[3156] 86. PRO1558

[3157] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1558 (shown in FIG. 172and SEQ ID NO: 306) has significant amino acid sequence identity with amethyltransferase protein (CAMT_EUCGU). Accordingly, it is presentlybelieved that PRO1558 disclosed in the present application is a newlyidentified member of the methyltransferase protein family and maypossess activity typical of that protein family.

[3158] 87. PRO1604

[3159] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1604 (shown in FIG. 174 andSEQ ID NO: 308) has certain amino acid sequence identity with the mouseliver cancer-originated cell growth factor designated P_W37483 on theDayhoff database. Accordingly, it is presently believed that PRO1604disclosed in the present application is a newly identified member of theHDGF family and may possess growth factor activity typical of otherHDGFs.

[3160] 88. PRO1491

[3161] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1491(shown in FIG. 176 and SEQ ID NO: 310) has certain amino acid sequenceidentity with a portion of the collapsin-2 protein of Gallus gallus(GGU28240_(—)1). Accordingly, it is presently believed that PRO1491disclosed in the present application is a newly identified member of thecollapsin protein family and may possess activity typical of thatprotein family.

[3162] 89. PRO1431

[3163] It has been found that the full-length native sequence PRO1431[shown in FIG. 178 (SEQ ID NO: 315) has significant sequence identitywith the SH3 domain containing protein SH17_HUMAN. Accordingly, it ispresently believed that PRO1431 disclosed in the present application isa newly identified member of proteins having an SH3 domains and maypossess signal transduction properties.

[3164] 90. PRO1563

[3165] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of a full-length native sequence PRO1563(shown in FIG. 180 and SEQ ID NO: 317) has certain amino acid sequenceidentity with a portion of the mouse ADAMTS-1 protein (AB001735_(—)1).Accordingly, it is presently believed that PRO1563 disclosed in thepresent application is a newly identified member of the ADAM proteinfamily and may possess activity typical of that protein family.

[3166] 91. PRO1565

[3167] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1565(shown in FIG. 182 and SEQ ID NO: 322) has certain amino acid sequenceidentity with a portion of the chondromodulin-I protein of rattusnorvegicus (AF051425_(—)1). Accordingly, it is presently believed thatPRO1565 disclosed in the present application is a newly identifiedmember of the chondromodulin protein family and may possess activitytypical of that protein family.

[3168] 92. PRO1571

[3169] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1571(shown in FIG. 184 and SEQ ID NO: 324) has certain amino acid sequenceidentity with a portion of the human clostridium perfringens enterotoxinreceptor protein (AB000712_(—)1). Accordingly, it is presently believedthat PRO1571 disclosed in the present application is a newly identifiedCPE-R homolog and may possess activity typical of the CPE-R protein.

[3170] 93. PRO1572

[3171] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1572 (shown in FIG. 186 andSEQ ID NO: 326) has certain amino acid sequence identity with CPE-R.Accordingly, it is presently believed that PRO1572 disclosed in thepresent application is related to CPE-R and may possess at least oneshared mechanism.

[3172] 94. PRO1573

[3173] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1573 (shown in FIG. 188 andSEQ ID NO: 328) has certain amino acid sequence identity with CPE-R.Accordingly, it is presently believed that PRO1573 disclosed in thepresent application is related to CPE-R and may possesses at least oneshared mechanism.

[3174] 95. PRO1488

[3175] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1488 (FIG. 190; SEQ ID NO:330) has certain amino acid sequence identity with a known CPE-Rdesignated “AB000712_(—)1” on the Dayhoff database. Accordingly, it ispresently believed that PRO1488 disclosed in the present application isa newly identified member of the CPE-R family and may possess bindingactivity typical of the CPE-R family.

[3176] 96. PRO1489

[3177] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1489(shown in FIG. 192 and SEQ ID NO: 332) has certain amino acid sequenceidentity with the clostridium perfringens enterotoxin receptor ofCercopithecus aethiops (D88492_(—)1). Accordingly, it is presentlybelieved that PRO1489 disclosed in the present application is a newlyidentified clostridium perfringens enterotoxin receptor homolog and maypossess activity typical of the clostridium perfringens enterotoxinreceptor protein.

[3178] 97. PRO1474

[3179] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1474 (shown in FIG. 194 andSEQ ID NO: 334) has certain amino acid sequence identity with ovomucoid.Accordingly, it is presently believed that PRO1474 disclosed in thepresent application is a newly identified member of the kazal serineprotease inhibitor family and may possess serine protease inhibitoryactivity typical of this family.

[3180] 98. PRO1508

[3181] The DNA73742-1508 clone was isolated from a human diseasedcartilage tissue library. As far as is known, the DNA73742-1508 sequenceencodes a novel factor designated herein as PRO1508; although, usingWU-BLAST2 sequence alignment computer programs, some sequence identitiesto known proteins were revealed.

[3182] 99. PRO1555

[3183] The DNA73744-1665 clone was isolated from a human tissue library.As far as is known, the DNA73744 sequence encodes a novel transmembraneprotein designated herein as PRO1555. Using WU-BLAST2 sequence alignmentcomputer programs, some sequence identities to known proteins wererevealed.

[3184] 100. PRO1485

[3185] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1485 (shown in FIG. 200 andSEQ ID NO: 340) has certain amino acid sequence identity with lysozyme Cprecursor peptide. Accordingly, it is presently believed that PRO1485disclosed in the present application is a newly identified member of thelysozyme family and shares at least one like mechanism.

[3186] 101. PRO1564

[3187] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of a full-length native sequence PRO1564(shown in FIG. 202 and SEQ ID NO: 347) has certain amino acid sequenceidentity with a portion of a mouse polypeptide Ga1NAc transferase T4protein (MMU73819_(—)1). Accordingly, it is presently believed thatPRO1564 disclosed in the present application is a newly identifiedmember of the N-acetylgalactosaminyltransferase protein family and maypossess activity typical of that protein family.

[3188] 102. PRO1755

[3189] As far as is known, the DNA76396-1698 sequence encodes a noveltransmembrane protein designated herein as PRO1755. Although, somesequence identities to known proteins was revealed using WU-BLAST2sequence alignment computer programs.

[3190] 103. PRO1757

[3191] The DNA76398-1699 clone was isolated from a human testiculartissue library using a trapping technique which selects for nucleotidesequences encoding proteins. As far as is known, the DNA76398-1699sequence encodes a novel factor designated herein as PRO1757; using theWU-BLAST2 sequence alignment computer program, no significant sequenceidentities to any known proteins were revealed.

[3192] 104. PRO1758

[3193] The DNA76399-1700 clone was isolated from a library derived fromhuman thymus tissue obtained from a fetus that died at 17 weeks'gestation from anencephalus. It is believed that the DNA76399-1700 cloneencodes a novel secreted factor, designated herein as PRO1758. UsingWU-BLAST2 sequence alignment computer programs, significant sequenceidentity was revealed between the amino acid sequences of PRO1758 andDayhoff sequence No. AC005328_(—)2.

[3194] 105. PRO1575

[3195] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1575 (shown in FIG. 210 andSEQ ID NO: 358) has certain amino acid sequence identity with Dayhoffsequence no. A12005_(—)1. Accordingly, it is presently believed thatPRO1575 disclosed in the present application is a newly identifiedmember of the protein disulfide isomerase family and may possessactivity and properties typical of the disulfide isomerase family.

[3196] 106. PRO1787

[3197] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1787 (shown in FIG. 212 andSEQ ID NO: 364) has certain amino acid sequence identity with variousspecies of myelin p0. Accordingly, it is presently believed that PRO1787disclosed in the present application is a newly identified member of themyelin p0 protein family and may share at least one similar mechanism.It is believed that modulators of PR1787 may be used to treat myelin p0associated disorders, such as neuropathy, hereditary tooth disease, etc.

[3198] 107. PRO1781

[3199] Using WU-BLAST2 sequence alignment computer programs, somesequence identities were found between the PRO1781 amino acid sequence(SEQ ID NO: 366) and the amino acid sequences of known proteins, butwere not found to be significant. Accordingly, as far as is known, theDNA76522-2500 sequence encodes a novel protein.

[3200] 108. PRO1556

[3201] The DNA76529-1666 clone was isolated from a human breast tumortissue library. As far as is known, the DNA76529-1666 sequence encodes anovel transmembrane protein designated herein as PRO1556. UsingWU-BLAST2 sequence alignment computer programs, some sequence identitiesto known proteins were revealed.

[3202] 109. PRO1759

[3203] As far as is known, the DNA76531-1701 sequence encodes a novelfactor designated herein as PRO1759; using WU-BLAST2 sequence alignmentcomputer programs, limited sequence identities to known proteins wererevealed.

[3204] 110. PRO1760

[3205] As far as is known, the DNA76532-1702 sequence encodes a novelfactor designated herein as PRO1760; using WU-BLAST2 sequence alignmentcomputer programs, limited sequence identities to known proteins wererevealed.

[3206] 111. PRO1561

[3207] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of a full-length native sequence PRO1561(shown in FIG. 222 and SEQ ID NO: 378) has certain amino acid sequenceidentity with a portion of the human phospholipase A2 protein(P_R63053). Accordingly, it is presently believed that PRO1561 disclosedin the present application is a newly identified member of thephospholipase A2 protein family and may possess activity typical of thatprotein family.

[3208] 112. PRO1567

[3209] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1567 (FIG. 224; SEQ ID NO:383) has certain amino acid sequence identity with human colon specificgene CSG6 polypeptide, identified as P_W06549 on the Dayhoff database.Accordingly, it is presently believed that PRO1567 disclosed in thepresent application is a newly identified CSG expression product, andmay possess properties typical of such proteins.

[3210] 113. PRO1693

[3211] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1693(shown in FIG. 226 and SEQ ID NO: 385) has certain amino acid sequenceidentity with a portion of a mouse insulin-like growth factor bindingprotein (ALS_MOUSE). Accordingly, it is presently believed that PRO1693disclosed in the present application is a newly identified member of theinsulin-like growth factor binding protein family and may possessactivity typical of that protein family.

[3212] 114. PRO1784

[3213] As far as is known, the DNA77303-2502 sequence encodes a novelfactor designated herein as PRO1784; using WU-BLAST2 sequence alignmentcomputer programs, some sequence identities to known proteins wererevealed.

[3214] 115. PRO1605

[3215] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1605(shown in FIG. 230 and SEQ ID NO: 395) has certain amino acid sequenceidentity with a portion of the human alpha-1,3-mannosylglycoproteinbeta-1,6-n-acetyltransferase protein (GNT5_HUMAN). Accordingly, it ispresently believed that PRO1605 disclosed in the present application isa newly identified member of the glycosyltransferase protein family andmay possess activity typical of that protein family.

[3216] 116. PRO1788

[3217] Using WU-BLAST2 sequence alignment computer programs, it has beenfound that a full-length native sequence PRO1788 (shown in FIG. 232 andSEQ ID NO: 397) has certain amino acid sequence identity with Dayhoffsequence “GARP_HUMAN”, a leucine-rich repeat-containing protein encodedby a gene localized in the 11q14 chromosomal region. Accordingly, it ispresently believed that PRO1788 disclosed in the present application isa newly identified member of the leucine-rich repeat-containing familyand may possess activity or properties typical of the leucine-richrepeat-containing family.

[3218] 117. PRO1801

[3219] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a portion of the full-length native sequence PRO1801(shown in FIG. 234 and SEQ ID NO: 402) has certain amino acid sequenceidentity with a portion of the IL-19 protein (P_W37935). Accordingly, itis presently believed that PRO1801 disclosed in the present applicationis a newly identified member of the IL-10-related cytokine family andmay possess activity typical of that cytokine family.

[3220] 118. UCP4

[3221] Using the Megalign DNASTAR computer program (and algorithms andparameters in this software set by the manufacturer) (Oxford MolecularGroup, Inc.), it has been found that a full-length native sequence UCP4(shown in FIG. 236 and SEQ ID NO: 406) has certain amino acid sequenceidentity with UCP3, UCP2 and UCP1. Accordingly, it is presently believedthat UCP4 disclosed in the present application is a newly identifiedmember of the human uncoupling protein family and may possessactivity(s) and/or property(s) typical of that protein family, such asthe ability to enhance or supress metabolic rate by affectingmitochondrial membrane potential.

[3222] 119. PRO193

[3223] The present invention provides newly identified and isolatednucleotide sequences encoding polypeptides referred to in the presentapplication as PRO193. In particular, Applicants have identified andisolated cDNA encoding a PRO193 polypeptide, as disclosed in furtherdetail in the Examples below. The PRO193-encoding clone was isolatedfrom a human retina library.

[3224] 120. PRO1130

[3225] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1130 (shown in FIG. 240and SEQ ID NO: 415) has amino acid sequence identity with the human 2-19protein. Accordingly, it is presently believed that PRO1130 disclosed inthe present application is a newly identified 2-19 protein homolog.

[3226] 121. PRO1335

[3227] Using the WU-BLAST2 sequence alignment computer program, it hasbeen found that a full-length native sequence PRO1335 (shown in FIG. 242and SEQ ID NO: 423) has certain amino acid sequence identity with thehuman carbonic anhydrase precursor protein (AF037335_(—)1). Accordingly,it is presently believed that PRO1335 disclosed in the presentapplication is a newly identified member of the carbonic anhydraseprotein family and may possess activity typical of that family.

[3228] 122. PRO1329

[3229] The DNA66660-1585 clone is believed to encode a secreted factor.As far as is known, the DNA66660-1585 sequence encodes a novel factordesignated herein as PRO1329; using WU-BLAST2 sequence alignmentcomputer programs, sequence identities to known proteins were revealedbut determined not to be significant.

[3230] 123. PRO1550

[3231] The DNA76393-1664 clone was isolated from a subtracted humanbreast tumor tissue library. As far as is known, the DNA76393-1664sequence encodes a novel factor designated herein as PRO1550; usingWU-BLAST2 sequence alignment computer programs, sequence identities toknown proteins were revealed but determined not to be significant.

B. PRO Variants

[3232] In addition to the full-length native sequence PRO polypeptidesdescribed herein, it is contemplated that PRO variants can be prepared.PRO variants can be prepared by introducing appropriate nucleotidechanges into the PRO DNA, and/or by synthesis of the desired PROpolypeptide. Those skilled in the art will appreciate that amino acidchanges may alter post-translational processes of the PRO, such aschanging the number or position of glycosylation sites or altering themembrane anchoring characteristics.

[3233] Variations in the native full-length sequence PRO or in variousdomains of the PRO described herein, can be made, for example, using anyof the techniques and guidelines for conservative and non-conservativemutations set forth, for instance, in U.S. Pat. No. 5,364,934.Variations may be a substitution, deletion or insertion of one or morecodons encoding the PRO that results in a change in the amino acidsequence of the PRO as compared with the native sequence PRO. Optionallythe variation is by substitution of at least one amino acid with anyother amino acid in one or more of the domains of the PRO. Guidance indetermining which amino acid residue may be inserted, substituted ordeleted without adversely affecting the desired activity may be found bycomparing the sequence of the PRO with that of homologous known proteinmolecules and minimizing the number of amino acid sequence changes madein regions of high homology. Amino acid substitutions can be the resultof replacing one amino acid with another amino acid having similarstructural and/or chemical properties, such as the replacement of aleucine with a serine, i.e., conservative amino acid replacements.Insertions or deletions may optionally be in the range of about 1 to 5amino acids. The variation allowed may be determined by systematicallymaking insertions, deletions or substitutions of amino acids in thesequence and testing the resulting variants for activity exhibited bythe full-length or mature native sequence.

[3234] PRO polypeptide fragments are provided herein. Such fragments maybe truncated at the N-terminus or C-terminus, or may lack internalresidues, for example, when compared with a full length native protein.Certain fragments lack amino acid residues that are not essential for adesired biological activity of the PRO polypeptide.

[3235] PRO fragments may be prepared by any of a number of conventionaltechniques. Desired peptide fragments may be chemically synthesized. Analternative approach involves generating PRO fragments by enzymaticdigestion, e.g., by treating the protein with an enzyme known to cleaveproteins at sites defined by particular amino acid residues, or bydigesting the DNA with suitable restriction enzymes and isolating thedesired fragment. Yet another suitable technique involves isolating andamplifying a DNA fragment encoding a desired polypeptide fragment, bypolymerase chain reaction (PCR). Oligonucleotides that define thedesired termini of the DNA fragment are employed at the 5′ and 3′primers in the PCR. Preferably, PRO polypeptide fragments share at leastone biological and/or immunological activity with the native PROpolypeptide disclosed herein.

[3236] In particular embodiments, conservative substitutions of interestare shown in Table 6 under the heading of preferred substitutions. Ifsuch substitutions result in a change in biological activity, then moresubstantial changes, denominated exemplary substitutions in Table 6, oras further described below in reference to amino acid classes, areintroduced and the products screened. TABLE 6 Original ExemplaryPreferred Residue Substitutions Substitutions Ala (A) val; leu; ile valArg (R) lys; gln; asn lys Asn (N) gln; his; lys; arg gln Asp (D) glu gluCys (C) ser ser Gln (Q) asn asn Glu (E) asp asp Gly (G) pro; ala ala His(H) asn; gln; lys; arg arg Ile (I) leu; val; met; ala; phe; norleucineleu Leu (L) norleucine; ile; val; met; ala; phe ile Lys (K) arg; gln;asn arg Met (M) leu; phe; ile leu Phe (F) leu; val; ile; ala; tyr leuPro (P) ala ala Ser (S) thr thr Thr (T) ser ser Trp (W) tyr; phe tyr Tyr(Y) trp; phe; thr; ser phe Val (V) ile; leu; met; phe; ala; norleucineleu

[3237] Substantial modifications in function or immunological identityof the PRO polypeptide are accomplished by selecting substitutions thatdiffer significantly in their effect on maintaining (a) the structure ofthe polypeptide backbone in the area of the substitution, for example,as a sheet or helical conformation, (b) the charge or hydrophobicity ofthe molecule at the target site, or (c) the bulk of the side chain.Naturally occurring residues are divided into groups based on commonside-chain properties:

[3238] (1) hydrophobic: norleucine, met, ala, val, leu, ile;

[3239] (2) neutral hydrophilic: cys, ser, thr;

[3240] (3) acidic: asp, glu;

[3241] (4) basic: asn, gln, his, lys, arg;

[3242] (5) residues that influence chain orientation: gly, pro; and

[3243] (6) aromatic: trp, tyr, phe.

[3244] Non-conservative substitutions will entail exchanging a member ofone of these classes for another class. Such substituted residues alsomay be introduced into the conservative substitution sites or, morepreferably, into the remaining (non-conserved) sites.

[3245] The variations can be made using methods known in the art such asoligonucleotide-mediated (site-directed) mutagenesis, alanine scanning,and PCR mutagenesis. Site-directed mutagenesis [Carter et al., Nucl.Acids Res., 13:4331 (1986); Zoller et al., Nucl. Acids Res., 10:6487(1987)], cassette mutagenesis [Wells al., Gene, 34:315 (1985)],restriction selection mutagenesis [Wells et al., Philos. Trans. R. Soc.London SerA, 317:415 (1986)] or other known techniques can be performedon the cloned DNA to produce the PRO variant DNA.

[3246] Scanning amino acid analysis can also be employed to identify oneor more amino acids along a contiguous sequence. Among the preferredscanning amino acids are relatively small, neutral amino acids. Suchamino acids include alanine, glycine, serine, and cysteine. Alanine istypically a preferred scanning amino acid among this group because iteliminates the side-chain beyond the beta-carbon and is less likely toalter the main-chain conformation of the variant [Cunningham and Wells,Science, 244: 1081-1085 (1989)]. Alanine is also typically preferredbecause it is the most common amino acid. Further, it is frequentlyfound in both buried and exposed positions [Creighton, The Proteins, (W.H. Freeman & Co., New York); Chothia, J. Mol. Biol., 150:1 (1976)]. Ifalanine substitution does not yield adequate amounts of variant, anisoteric amino acid can be used.

C. Modifications of PRO

[3247] Covalent modifications of PRO are included within the scope ofthis invention. One type of covalent modification includes reactingtargeted amino acid residues of a PRO polypeptide with an organicderivatizing agent that is capable of reacting with selected side chainsor the N- or C-terminal residues of the PRO. Derivatization withbifunctional agents is useful, for instance, for crosslinking PRO to awater-insoluble support matrix or surface for use in the method forpurifying anti-PRO antibodies, and vice-versa. Commonly usedcrosslinking agents include, e.g., 1,1-bis(diazoacetyl)-2-phenylethane,glutaraldehyde, N-hydroxysuccinimide esters, for example, esters with4-azidosalicylic acid, homobifunctional imidoesters, includingdisuccinimidyl esters such as 3,3′-dithiobis(succinimidylpropionate),bifunctional maleimides such as bis-N-maleimido-1,8-octane and agentssuch as methyl-3-[(p-azidophenyl)dithio]propioimidate.

[3248] Other modifications include deamidation of glutaminyl andasparaginyl residues to the corresponding glutamyl and aspartylresidues, respectively, hydroxylation of proline and lysine,phosphorylation of hydroxyl groups of seryl or threonyl residues,methylation of the α-amino groups of lysine, arginine, and histidineside chains [T. E. Creighton, Proteins: Structure and MolecularProperties, W. H. Freeman & Co., San Francisco, pp. 79-86 (1983)],acetylation of the N-terminal amine, and amidation of any C-terminalcarboxyl group.

[3249] Another type of covalent modification of the PRO polypeptideincluded within the scope of this invention comprises altering thenative glycosylation pattern of the polypeptide. “Altering the nativeglycosylation pattern” is intended for purposes herein to mean deletingone or more carbohydrate moieties found in native sequence PRO (eitherby removing the underlying glycosylation site or by deleting theglycosylation by chemical and/or enzymatic means), and/or adding one ormore glycosylation sites that are not present in the native sequencePRO. In addition, the phrase includes qualitative changes in theglycosylation of the native proteins, involving a change in the natureand proportions of the various carbohydrate moieties present.

[3250] Addition of glycosylation sites to the PRO polypeptide may beaccomplished by altering the amino acid sequence. The alteration may bemade, for example, by the addition of, or substitution by, one or moreserine or threonine residues to the native sequence PRO (for O-linkedglycosylation sites). The PRO amino acid sequence may optionally bealtered through changes at the DNA level, particularly by mutating theDNA encoding the PRO polypeptide at preselected bases such that codonsare generated that will translate into the desired amino acids.

[3251] Another means of increasing the number of carbohydrate moietieson the PRO polypeptide is by chemical or enzymatic coupling ofglycosides to the polypeptide. Such methods are described in the art,e.g., in WO 87/05330 published Sep. 11, 1987, and in Aplin and Wriston,CRC Crit. Rev. Biochem., pp. 259-306 (1981).

[3252] Removal of carbohydrate moieties present on the PRO polypeptidemay be accomplished chemically or enzymatically or by mutationalsubstitution of codons encoding for amino acid residues that serve astargets for glycosylation. Chemical deglycosylation techniques are knownin the art and described, for instance, by Hakimuddin, et al., Arch.Biochem. Biophys., 259:52 (1987) and by Edge et al., Anal. Biochem.,118:131 (1981). Enzymatic cleavage of carbohydrate moieties onpolypeptides can be achieved by the use of a variety of endo- andexo-glycosidases as described by Thotakura et al., Meth. Enzymol.,138:350 (1987).

[3253] Another type of covalent modification of PRO comprises linkingthe PRO polypeptide to one of a variety of nonproteinaceous polymers,e.g., polyethylene glycol (PEG), polypropylene glycol, orpolyoxyalkylenes, in the manner set forth in U.S. Pat. Nos. 4,640,835;4,496,689; 4,301,144; 4,670,417; 4,791,192 or 4,179,337.

[3254] The PRO of the present invention may also be modified in a way toform a chimeric molecule comprising PRO fused to another, heterologouspolypeptide or amino acid sequence.

[3255] In one embodiment, such a chimeric molecule comprises a fusion ofthe PRO with a tag polypeptide which provides an epitope to which ananti-tag antibody can selectively bind. The epitope tag is generallyplaced at the amino- or carboxyl-terminus of the PRO. The presence ofsuch epitope-tagged forms of the PRO can be detected using an antibodyagainst the tag polypeptide. Also, provision of the epitope tag enablesthe PRO to be readily purified by affinity purification using ananti-tag antibody or another type of affinity matrix that binds to theepitope tag. Various tag polypeptides and their respective antibodiesare well known in the art. Examples include poly-histidine (poly-his) orpoly-histidine-glycine (poly-his-gly) tags; the flu HA tag polypeptideand its antibody 12CA5 [Field et al., Mol. Cell. Biol., 8:2159-2165(1988)]; the c-myc tag and the 8F9,3C7, 6E10, G4, B7 and 9E10 antibodiesthereto [Evan et al., Molecular and Cellular Biology, 5:3610-3616(1985]; and the Herpes Simplex virus glycoprotein D (gD) tag and itsantibody [Paborsky et al., Protein Engineering, 3(6):547-553 (1990)].Other tag polypeptides include the Flag-peptide [Hopp et al.,BioTechnology, 6:1204-1210 (1988)]; the KT3 epitope peptide [Martin etal., Science, 255:192-194 (1992)]; an α-tubulin epitope peptide [Skinneret al., J. Biol. Chem., 266:15163-15166 (1991)]; and the T7 gene 10protein peptide tag [Lutz-Freyermuth et al., Proc. Natl. Acad. Sci. USA,87:6393-6397 (1990)].

[3256] In an alternative embodiment, the chimeric molecule may comprisea fusion of the PRO with an immunoglobulin or a particular region of animmunoglobulin. For a bivalent form of the chimeric molecule (alsoreferred to as an “immunoadhesin”), such a fusion could be to the Fcregion of an IgG molecule. The Ig fusions preferably include thesubstitution of a soluble (transmembrane domain deleted or inactivated)form of a PRO polypeptide in place of at least one variable regionwithin an Ig molecule. In a particularly preferred embodiment, theimmunoglobulin fusion includes the hinge, CH2 and CH3, or the hinge,CH1, CH2 and CH3 regions of an IgG1 molecule. For the production ofimmunoglobulin fusions see also U.S. Pat. No. 5,428,130 issued Jun. 27,1995.

D. Preparation of PRO

[3257] The description below relates primarily to production of PRO byculturing cells transformed or transfected with a vector containing PROnucleic acid. It is, of course, contemplated that alternative methods,which are well known in the art, may be employed to prepare PRO. Forinstance, the PRO sequence, or portions thereof, may be produced bydirect peptide synthesis using solid-phase techniques [see, e.g.,Stewart et al., Solid-Phase Peptide Synthesis, W. H. Freeman Co., SanFrancisco, Calif. (1969); Merrifield, J. Am. Chem. Soc., 85:2149-2154(1963)]. In vitro protein synthesis may be performed using manualtechniques or by automation. Automated synthesis may be accomplished,for instance, using an Applied Biosystems Peptide Synthesizer (FosterCity, Calif.) using manufacturer's instructions. Various portions of thePRO may be chemically synthesized separately and combined using chemicalor enzymatic methods to produce the full-length PRO.

1. Isolation of DNA Encoding PRO

[3258] DNA encoding PRO may be obtained from a cDNA library preparedfrom tissue believed to possess the PRO mRNA and to express it at adetectable level. Accordingly, human PRO DNA can be convenientlyobtained from a cDNA library prepared from human tissue, such asdescribed in the Examples. The PRO-encoding gene may also be obtainedfrom a genomic library or by known synthetic procedures (e.g., automatednucleic acid synthesis).

[3259] Libraries can be screened with probes (such as antibodies to thePRO or oligonucleotides of at least about 20-80 bases) designed toidentify the gene of interest or the protein encoded by it. Screeningthe cDNA or genomic library with the selected probe may be conductedusing standard procedures, such as described in Sambrook et al.,Molecular Cloning: A Laboratory Manual (New York: Cold Spring HarborLaboratory Press, 1989). An alternative means to isolate the geneencoding PRO is to use PCR methodology [Sambrook et al., supra;Dieffenbach et al., PCR Primer: A Laboratory Manual (Cold Spring HarborLaboratory Press, 1995)].

[3260] The Examples below describe techniques for screening a cDNAlibrary. The oligonucleotide sequences selected as probes should be ofsufficient length and sufficiently unambiguous that false positives areminimized. The oligonucleotide is preferably labeled such that it can bedetected upon hybridization to DNA in the library being screened.Methods of labeling are well known in the art, and include the use ofradiolabels like ³²P-labeled ATP, biotinylation or enzyme labeling.Hybridization conditions, including moderate stringency and highstringency, are provided in Sambrook et al., supra.

[3261] Sequences identified in such library screening methods can becompared and aligned to other known sequences deposited and available inpublic databases such as GenBank or other private sequence databases.Sequence identity (at either the amino acid or nucleotide level) withindefined regions of the molecule or across the full-length sequence canbe determined using methods known in the art and as described herein.

[3262] Nucleic acid having protein coding sequence may be obtained byscreening selected cDNA or genomic libraries using the deduced aminoacid sequence disclosed herein for the first time, and, if necessary,using conventional primer extension procedures as described in Sambrooket al., supra, to detect precursors and processing intermediates of mRNAthat may not have been reverse-transcribed into cDNA.

2. Selection and Transformation of Host Cells

[3263] Host cells are transfected or transformed with expression orcloning vectors described herein for PRO production and cultured inconventional nutrient media modified as appropriate for inducingpromoters, selecting transformants, or amplifying the genes encoding thedesired sequences. The culture conditions, such as media, temperature,pH and the like, can be selected by the skilled artisan without undueexperimentation. In general, principles, protocols, and practicaltechniques for maximizing the productivity of cell cultures can be foundin Mammalian Cell Biotechnology: a Practical Approach, M. Butler, ed.(IRL Press, 1991) and Sambrook et al., supra.

[3264] Methods of eukaryotic cell transfection and prokaryotic celltransformation are known to the ordinarily skilled artisan, for example,CaCl₂, CaPO₄, liposome-mediated and electroporation. Depending on thehost cell used, transformation is performed using standard techniquesappropriate to such cells. The calcium treatment employing calciumchloride, as described in Sambrook et al., supra, or electroporation isgenerally used for prokaryotes. Infection with Agrobacterium tumefaciensis used for transformation of certain plant cells, as described by Shawet al., Gene, 23:315 (1983) and WO 89/05859 published Jun. 29, 1989. Formammalian cells without such cell walls, the calcium phosphateprecipitation method of Graham and van der Eb, Virology, 52:456-457(1978) can be employed. General aspects of mammalian cell host systemtransfections have been described in U.S. Pat. No. 4,399,216.Transformations into yeast are typically carried out according to themethod of Van Solingen et al., J. Bact. 130:946 (1977) and Hsiao et al.,Proc. Natl. Acad. Sci. (USA), 76:3829 (1979). However, other methods forintroducing DNA into cells, such as by nuclear microinjection,electroporation, bacterial protoplast fusion with intact cells, orpolycations, e.g., polybrene, polyornithine, may also be used. Forvarious techniques for transforming mammalian cells, see Keown et al.,Methods in Enzymology, 185:527-537 (1990) and Mansour et al., Nature,336:348-352 (1988).

[3265] Suitable host cells for cloning or expressing the DNA in thevectors herein include prokaryote, yeast, or higher eukaryote cells.Suitable prokaryotes include but are not limited to eubacteria, such asGram-negative or Gram-positive organisms, for example,Enterobacteriaceae such as E. coli. Various E. coli strains are publiclyavailable, such as E. coli K12 strain MM294 (ATCC 31,446); E. coli X1776(ATCC 31,537); E. coli strain W3110 (ATCC 27,325) and K5 772 (ATCC53,635). Other suitable prokaryotic host cells includeEnterobacteriaceae such as Escherichia, e.g., E. coli, Enterobacter,Erwinia, Klebsiella, Proteus, Salmonella, e.g., Salmonella typhimurium,Serratia, e.g., Serratia marcescans, and Shigella, as well as Bacillisuch as B. subtilis and B. licheniformis (e.g., B. licheniformis 41Pdisclosed in DD 266,710 published Apr. 12, 1989), Pseudomonas such as P.aeruginosa, and Streptomyces. These examples are illustrative ratherthan limiting. Strain W3110 is one particularly preferred host or parenthost because it is a common host strain for recombinant DNA productfermentations. Preferably, the host cell secretes minimal amounts ofproteolytic enzymes. For example, strain W3110 may be modified to effecta genetic mutation in the genes encoding proteins endogenous to thehost, with examples of such hosts including E. coli W3 110 strain 1A2,which has the complete genotype tonA; E. coli W3110 strain 9E4, whichhas the complete genotype tonA ptr3; E. coli W3110 strain 27C7 (ATCC55,244), which has the complete genotype tonA ptr3 phoA E15(argF-lac)169 degP ompTkan^(r) ; E. coli W3110 strain 37D6, which hasthe complete genotype tonA ptr3 phoA E15 (argF-lac)169 degP ompT rbs7ilvG kan^(r) ; E. coli W3110 strain 40B4, which is strain 37D6 with anon-kanamycin resistant degP deletion mutation; and an E. coli strainhaving mutant periplasmic protease disclosed in U.S. Pat. No. 4,946,783issued Aug. 7, 1990. Alternatively, in vitro methods of cloning, e.g.,PCR or other nucleic acid polymerase reactions, are suitable.

[3266] In addition to prokaryotes, eukaryotic microbes such asfilamentous fungi or yeast are suitable cloning or expression hosts forPRO-encoding vectors. Saccharomyces cerevisiae is a commonly used lowereukaryotic host microorganism. Others include Schizosaccharomyces pombe(Beach and Nurse, Nature, 290: 140 [1981]; EP 139,383 published May 2,1985); Kluyveromyces hosts (U.S. Pat. No. 4,943,529; Fleer et al.,Bio/Technology, 9:968-975 (1991)) such as, e.g., K. lactis (MW98-8C,CBS683, CBS4574; Louvencourt et al., J. Bacteriol., 154(2):737-742[1983]), K. fragilis (ATCC 12,424), K. bulgaricus (ATCC 16,045), K.wickeramii (ATCC 24,178), K. waltii (ATCC 56,500), K. drosophilarum(ATCC 36,906; Van den Berg et al., Bio/Technology, 8:135 (1990)), K.thermotolerans, and K. marxianus; yarrowia (EP 402,226); Pichia pastoris(EP 183,070; Sreekrishna et al., J. Basic Microbiol., 28:265-278[1988]); Candida; Trichoderma reesia (EP 244,234); Neurospora crassa(Case et al., Proc. Natl. Acad. Sci. USA, 76:5259-5263 [1979]);Schwanniomyces such as Schwanniomyces occidentalis (EP 394,538 publishedOct. 31, 1990); and filamentous fungi such as, e.g., Neurospora,Penicillium, Tolypocladium (WO 91/00357 published Jan. 10, 1991), andAspergillus hosts such as A. nidulans (Ballance et al., Biochem.Biophys. Res. Commun., 112:284-289 [1983]; Tilburn et al., Gene,26:205-221 [1983]; Yelton et al., Proc. Natl. Acad. Sci. USA, 81:1470-1474 [1984]) and A. niger (Kelly and Hynes, EMBO J., 4:475-479[1985]). Methylotropic yeasts are suitable herein and include, but arenot limited to, yeast capable of growth on methanol selected from thegenera consisting of Hansenula, Candida, Kloeckera, Pichia,Saccharomyces, Torulopsis, and Rhodotorula. A list of specific speciesthat are exemplary of this class of yeasts may be found in C. Anthony,The Biochemistry of Methylotrophs, 269 (1982).

[3267] Suitable host cells for the expression of glycosylated PRO arederived from multicellular organisms. Examples of invertebrate cellsinclude insect cells such as Drosophila S2 and Spodoptera Sf9, as wellas plant cells. Examples of useful mammalian host cell lines includeChinese hamster ovary (CHO) and COS cells. More specific examplesinclude monkey kidney CV1 line transformed by SV40 (COS-7, ATCC CRL1651); human embryonic kidney line (293 or 293 cells subcloned forgrowth in suspension culture, Graham et al., J. Gen Virol., 36:59(1977)); Chinese hamster ovary cells/-DHFR (CHO, Urlaub and Chasin,Proc. Natl. Acad. Sci. USA, 77:4216 (1980)); mouse sertoli cells (TM4,Mather, Biol. Reprod., 23:243-251 (1980)); human lung cells (W138, ATCCCCL 75); human liver cells (Hep G2, HB 8065); and mouse mammary tumor(MMT 060562, ATCC CCL51). The selection of the appropriate host cell isdeemed to be within the skill in the art.

3. Selection and Use of a Replicable Vector

[3268] The nucleic acid (e.g., cDNA or genomic DNA) encoding PRO may beinserted into a replicable vector for cloning (amplification of the DNA)or for expression. Various vectors are publicly available. The vectormay, for example, be in the form of a plasmid, cosmid, viral particle,or phage. The appropriate nucleic acid sequence may be inserted into thevector by a variety of procedures. In general, DNA is inserted into anappropriate restriction endonuclease site(s) using techniques known inthe art. Vector components generally include, but are not limited to,one or more of a signal sequence, an origin of replication, one or moremarker genes, an enhancer element, a promoter, and a transcriptiontermination sequence. Construction of suitable vectors containing one ormore of these components employs standard ligation techniques which areknown to the skilled artisan.

[3269] The PRO may be produced recombinantly not only directly, but alsoas a fusion polypeptide with a heterologous polypeptide, which may be asignal sequence or other polypeptide having a specific cleavage site atthe N-terminus of the mature protein or polypeptide. In general, thesignal sequence may be a component of the vector, or it may be a part ofthe PRO-encoding DNA that is inserted into the vector. The signalsequence may be a prokaryotic signal sequence selected, for example,from the group of the alkaline phosphatase, penicillinase, 1 pp, orheat-stable enterotoxin II leaders. For yeast secretion the signalsequence may be, e.g., the yeast invertase leader, alpha factor leader(including Saccharomyces and Kluyveromyces α-factor leaders, the latterdescribed in U.S. Pat. No. 5,010,182), or acid phosphatase leader, theC. albicans glucoamylase leader (EP 362,179 published Apr. 4, 1990), orthe signal described in WO 90/13646 published Nov. 15, 1990. Inmammalian cell expression, mammalian signal sequences may be used todirect secretion of the protein, such as signal sequences from secretedpolypeptides of the same or related species, as well as viral secretoryleaders.

[3270] Both expression and cloning vectors contain a nucleic acidsequence that enables the vector to replicate in one or more selectedhost cells. Such sequences are well known for a variety of bacteria,yeast, and viruses. The origin of replication from the plasmid pBR322 issuitable for most Gram-negative bacteria, the 2μ plasmid origin issuitable for yeast, and various viral origins (SV40, polyoma,adenovirus, VSV or BPV) are useful for cloning vectors in mammaliancells.

[3271] Expression and cloning vectors will typically contain a selectiongene, also termed a selectable marker. Typical selection genes encodeproteins that (a) confer resistance to antibiotics or other toxins,e.g., ampicillin, neomycin, methotrexate, or tetracycline, (b)complement auxotrophic deficiencies, or (c) supply critical nutrientsnot available from complex media, e.g., the gene encoding D-alanineracemase for Bacilli.

[3272] An example of suitable selectable markers for mammalian cells arethose that enable the identification of cells competent to take up thePRO-encoding nucleic acid, such as DHFR or thymidine kinase. Anappropriate host cell when wild-type DHFR is employed is the CHO cellline deficient in DHFR activity, prepared and propagated as described byUrlaub et al., Proc. Natl. Acad. Sci. USA, 77:4216 (1980). A suitableselection gene for use in yeast is the trp1 gene present in the yeastplasmid YRp7 [Stinchcomb et al., Nature, 282:39 (1979); Kingsman et al.,Gene, 7:141 (1979); Tschemper et al., Gene, 10:157 (1980)]. The trp1gene provides a selection marker for a mutant strain of yeast lackingthe ability to grow in tryptophan, for example, ATCC No. 44076 or PEP4-1[Jones, Genetics, 85:12 (1977)].

[3273] Expression and cloning vectors usually contain a promoteroperably linked to the PRO-encoding nucleic acid sequence to direct mRNAsynthesis. Promoters recognized by a variety of potential host cells arewell known. Promoters suitable for use with prokaryotic hosts includethe β-lactamase and lactose promoter systems [Chang et al., Nature,275:615 (1978); Goeddel et al., Nature, 281:544 (1979)], alkalinephosphatase, a tryptophan (trp) promoter system [Goeddel, Nucleic AcidsRes., 8:4057 (1980); EP 36,776], and hybrid promoters such as the tacpromoter [deBoer et al., Proc. Natl. Acad. Sci. USA, 80:21-25 (1983)].Promoters for use in bacterial systems also will contain aShine-Dalgarno (S.D.) sequence operably linked to the DNA encoding PRO.

[3274] Examples of suitable promoting sequences for use with yeast hostsinclude the promoters for 3-phosphoglycerate kinase [Hitzeman et al., J.Biol. Chem., 255:2073 (1980)] or other glycolytic enzymes [Hess et al.,J. Adv. Enzyme Reg., 7:149 (1968); Holland, Biochemistry, 17:4900(1978)], such as enolase, glyceraldehyde-3-phosphate dehydrogenase,hexokinase, pyruvate decarboxylase, phosphofructokinase,glucose-6-phosphate isomerase, 3-phosphoglycerate mutase, pyruvatekinase, triosephosphate isomerase, phosphoglucose isomerase, andglucokinase.

[3275] Other yeast promoters, which are inducible promoters having theadditional advantage of transcription controlled by growth conditions,are the promoter regions for alcohol dehydrogenase 2, isocytochrome C,acid phosphatase, degradative enzymes associated with nitrogenmetabolism, metallothionein, glyceraldehyde-3-phosphate dehydrogenase,and enzymes responsible for maltose and galactose utilization. Suitablevectors and promoters for use in yeast expression are further describedin EP 73,657.

[3276] PRO transcription from vectors in mammalian host cells iscontrolled, for example, by promoters obtained from the genomes ofviruses such as polyoma virus, fowlpox virus (UK 2,211,504 publishedJul. 5, 1989), adenovirus (such as Adenovirus 2), bovine papillomavirus, avian sarcoma virus, cytomegalovirus, a retrovirus, hepatitis-Bvirus and Simian Virus 40 (SV40), from heterologous mammalian promoters,e.g., the actin promoter or an immunoglobulin promoter, and fromheat-shock promoters, provided such promoters are compatible with thehost cell systems.

[3277] Transcription of a DNA encoding the PRO by higher eukaryotes maybe increased by inserting an enhancer sequence into the vector.Enhancers are cis-acting elements of DNA, usually about from 10 to 300bp, that act on a promoter to increase its transcription. Many enhancersequences are now known from mammalian genes (globin, elastase, albumin,α-fetoprotein, and insulin). Typically, however, one will use anenhancer from a eukaryotic cell virus. Examples include the SV40enhancer on the late side of the replication origin (bp 100-270), thecytomegalovirus early promoter enhancer, the polyoma enhancer on thelate side of the replication origin, and adenovirus enhancers. Theenhancer may be spliced into the vector at a position 5′ or 3′ to thePRO coding sequence, but is preferably located at a site 5′ from thepromoter.

[3278] Expression vectors used in eukaryotic host cells (yeast, fungi,insect, plant, animal, human, or nucleated cells from othermulticellular organisms) will also contain sequences necessary for thetermination of transcription and for stabilizing the mRNA. Suchsequences are commonly available from the 5′ and, occasionally 3′,untranslated regions of eukaryotic or viral DNAs or cDNAs. These regionscontain nucleotide segments transcribed as polyadenylated fragments inthe untranslated portion of the mRNA encoding PRO.

[3279] Still other methods, vectors, and host cells suitable foradaptation to the synthesis of PRO in recombinant vertebrate cellculture are described in Gething et al., Nature, 293:620-625 (1981);Mantei et al., Nature, 281:40-46 (1979); EP 117,060; and EP 117,058.

4. Detecting Gene Amplification/Expression

[3280] Gene amplification and/or expression may be measured in a sampledirectly, for example, by conventional Southern blotting, Northernblotting to quantitate the transcription of mRNA [Thomas, Proc. Natl.Acad. Sci. USA, 77:5201-5205 (1980)], dot blotting (DNA analysis), or insitu hybridization, using an appropriately labeled probe, based on thesequences provided herein. Alternatively, antibodies may be employedthat can recognize specific duplexes, including DNA duplexes, RNAduplexes, and DNA-RNA hybrid duplexes or DNA-protein duplexes. Theantibodies in turn may be labeled and the assay may be carried out wherethe duplex is bound to a surface, so that upon the formation of duplexon the surface, the presence of antibody bound to the duplex can bedetected.

[3281] Gene expression, alternatively, may be measured by immunologicalmethods, such as immunohistochemical staining of cells or tissuesections and assay of cell culture or body fluids, to quantitatedirectly the expression of gene product. Antibodies useful forimmunohistochemical staining and/or assay of sample fluids may be eithermonoclonal or polyclonal, and may be prepared in any mammal.Conveniently, the antibodies may be prepared against a native sequencePRO polypeptide or against a synthetic peptide based on the DNAsequences provided herein or against exogenous sequence fused to PRO DNAand encoding a specific antibody epitope.

5. Purification of Polypeptide

[3282] Forms of PRO may be recovered from culture medium or from hostcell lysates. If membrane-bound, it can be released from the membraneusing a suitable detergent solution (e.g. Triton-X 100) or by enzymaticcleavage. Cells employed in expression of PRO can be disrupted byvarious physical or chemical means, such as freeze-thaw cycling,sonication, mechanical disruption, or cell lysing agents.

[3283] It may be desired to purify PRO from recombinant cell proteins orpolypeptides. The following procedures are exemplary of suitablepurification procedures: by fractionation on an ion-exchange column;ethanol precipitation; reverse phase HPLC; chromatography on silica oron a cation-exchange resin such as DEAE; chromatofocusing; SDS-PAGE;ammonium sulfate precipitation; gel filtration using, for example,Sephadex G-75; protein A Sepharose columns to remove contaminants suchas IgG; and metal chelating columns to bind epitope-tagged forms of thePRO. Various methods of protein purification may be employed and suchmethods are known in the art and described for example in Deutscher,Methods in Enzymology, 182 (1990); Scopes, Protein Purification:Principles and Practice, Springer-Verlag, New York (1982). Thepurification step(s) selected will depend, for example, on the nature ofthe production process used and the particular PRO produced.

E. Uses for PRO

[3284] Nucleotide sequences (or their complement) encoding PRO havevarious applications in the art of molecular biology, including uses ashybridization probes, in chromosome and gene mapping and in thegeneration of anti-sense RNA and DNA. PRO nucleic acid will also beuseful for the preparation of PRO polypeptides by the recombinanttechniques described herein.

[3285] The full-length native sequence PRO gene, or portions thereof,may be used as hybridization probes for a cDNA library to isolate thefull-length PRO cDNA or to isolate still other cDNAs (for instance,those encoding naturally-occurring variants of PRO or PRO from otherspecies) which have a desired sequence identity to the native PROsequence disclosed herein. Optionally, the length of the probes will beabout 20 to about 50 bases. The hybridization probes may be derived fromat least partially novel regions of the full length native nucleotidesequence wherein those regions may be determined without undueexperimentation or from genomic sequences including promoters, enhancerelements and introns of native sequence PRO. By way of example, ascreening method will comprise isolating the coding region of the PROgene using the known DNA sequence to synthesize a selected probe ofabout 40 bases. Hybridization probes may be labeled by a variety oflabels, including radionucleotides such as ³²P or ³⁵S, or enzymaticlabels such as alkaline phosphatase coupled to the probe viaavidin/biotin coupling systems. Labeled probes having a sequencecomplementary to that of the PRO gene of the present invention can beused to screen libraries of human cDNA, genomic DNA or mRNA to determinewhich members of such libraries the probe hybridizes to. Hybridizationtechniques are described in further detail in the Examples below.

[3286] Any EST sequences disclosed in the present application maysimilarly be employed as probes, using the methods disclosed herein.

[3287] Other useful fragments of the PRO nucleic acids include antisenseor sense oligonucleotides comprising a singe-stranded nucleic acidsequence (either RNA or DNA) capable of binding to target PRO mRNA(sense) or PRO DNA (antisense) sequences. Antisense or senseoligonucleotides, according to the present invention, comprise afragment of the coding region of PRO DNA. Such a fragment generallycomprises at least about 14 nucleotides, preferably from about 14 to 30nucleotides. The ability to derive an antisense or a senseoligonucleotide, based upon a cDNA sequence encoding a given protein isdescribed in, for example, Stein and Cohen (Cancer Res. 48:2659, 1988)and van der Krol et al. (BioTechniques 6:958, 1988).

[3288] Binding of antisense or sense oligonucleotides to target nucleicacid sequences results in the formation of duplexes that blocktranscription or translation of the target sequence by one of severalmeans, including enhanced degradation of the duplexes, prematuretermination of transcription or translation, or by other means. Theantisense oligonucleotides thus may be used to block expression of PROproteins. Antisense or sense oligonucleotides further compriseoligonucleotides having modified sugar-phosphodiester backbones (orother sugar linkages, such as those described in WO 91/06629) andwherein such sugar linkages are resistant to endogenous nucleases. Sucholigonucleotides with resistant sugar linkages are stable in vivo (i.e.,capable of resisting enzymatic degradation) but retain sequencespecificity to be able to bind to target nucleotide sequences.

[3289] Other examples of sense or antisense oligonucleotides includethose oligonucleotides which are covalently linked to organic moieties,such as those described in WO 90/10048, and other moieties thatincreases affinity of the oligonucleotide for a target nucleic acidsequence, such as poly-(L-lysine). Further still, intercalating agents,such as ellipticine, and alkylating agents or metal complexes may beattached to sense or antisense oligonucleotides to modify bindingspecificities of the antisense or sense oligonucleotide for the targetnucleotide sequence.

[3290] Antisense or sense oligonucleotides may be introduced into a cellcontaining the target nucleic acid sequence by any gene transfer method,including, for example, CaPO₄-mediated DNA transfection,electroporation, or by using gene transfer vectors such as Epstein-Barrvirus. In a preferred procedure, an antisense or sense oligonucleotideis inserted into a suitable retroviral vector. A cell containing thetarget nucleic acid sequence is contacted with the recombinantretroviral vector, either in vivo or ex vivo. Suitable retroviralvectors include, but are not limited to, those derived from the murineretrovirus M-MuLV, N2 (a retrovirus derived from M-MuLV), or the doublecopy vectors designated DCT5A, DCT5B and DCT5C (see WO 90/13641).

[3291] Sense or antisense oligonucleotides also may be introduced into acell containing the target nucleotide sequence by formation of aconjugate with a ligand binding molecule, as described in WO 91/04753.Suitable ligand binding molecules include, but are not limited to, cellsurface receptors, growth factors, other cytokines, or other ligandsthat bind to cell surface receptors. Preferably, conjugation of theligand binding molecule does not substantially interfere with theability of the ligand binding molecule to bind to its correspondingmolecule or receptor, or block entry of the sense or antisenseoligonucleotide or its conjugated version into the cell.

[3292] Alternatively, a sense or an antisense oligonucleotide may beintroduced into a cell containing the target nucleic acid sequence byformation of an oligonucleotide-lipid complex, as described in WO90/10448. The sense or antisense oligonucleotide-lipid complex ispreferably dissociated within the cell by an endogenous lipase.

[3293] Antisense or sense RNA or DNA molecules are generally at leastabout 5 bases in length, about 10 bases in length, about 15 bases inlength, about 20 bases in length, about 25 bases in length, about 30bases in length, about 35 bases in length, about 40 bases in length,about 45 bases in length, about 50 bases in length, about 55 bases inlength, about 60 bases in length, about 65 bases in length, about 70bases in length, about 75 bases in length, about 80 bases in length,about 85 bases in length, about 90 bases in length, about 95 bases inlength, about 100 bases in length, or more.

[3294] The probes may also be employed in PCR techniques to generate apool of sequences for identification of closely related PRO codingsequences.

[3295] Nucleotide sequences encoding a PRO can also be used to constructhybridization probes for mapping the gene which encodes that PRO and forthe genetic analysis of individuals with genetic disorders. Thenucleotide sequences provided herein may be mapped to a chromosome andspecific regions of a chromosome using known techniques, such as in situhybridization, linkage analysis against known chromosomal markers, andhybridization screening with libraries.

[3296] When the coding sequences for PRO encode a protein which binds toanother protein (example, where the PRO is a receptor), the PRO can beused in assays to identify the other proteins or molecules involved inthe binding interaction. By such methods, inhibitors of thereceptor/ligand binding interaction can be identified. Proteins involvedin such binding interactions can also be used to screen for peptide orsmall molecule inhibitors or agonists of the binding interaction. Also,the receptor PRO can be used to isolate correlative ligand(s). Screeningassays can be designed to find lead compounds that mimic the biologicalactivity of a native PRO or a receptor for PRO. Such screening assayswill include assays amenable to high-throughput screening of chemicallibraries, making them particularly suitable for identifying smallmolecule drug candidates. Small molecules contemplated include syntheticorganic or inorganic compounds. The assays can be performed in a varietyof formats, including protein-protein binding assays, biochemicalscreening assays, immunoassays and cell based assays, which are wellcharacterized in the art.

[3297] Nucleic acids which encode PRO or its modified forms can also beused to generate either transgenic animals or “knock out” animals which,in turn, are useful in the development and screening of therapeuticallyuseful reagents. A transgenic animal (e.g., a mouse or rat) is an animalhaving cells that contain a transgene, which transgene was introducedinto the animal or an ancestor of the animal at a prenatal, e.g., anembryonic stage. A transgene is a DNA which is integrated into thegenome of a cell from which a transgenic animal develops. In oneembodiment, cDNA encoding PRO can be used to clone genomic DNA encodingPRO in accordance with established techniques and the genomic sequencesused to generate transgenic animals that contain cells which express DNAencoding PRO. Methods for generating transgenic animals, particularlyanimals such as mice or rats, have become conventional in the art andare described, for example, in U.S. Pat. Nos. 4,736,866 and 4,870,009.Typically, particular cells would be targeted for PRO transgeneincorporation with tissue-specific enhancers. Transgenic animals thatinclude a copy of a transgene encoding PRO introduced into the germ lineof the animal at an embryonic stage can be used to examine the effect ofincreased expression of DNA encoding PRO. Such animals can be used astester animals for reagents thought to confer protection from, forexample, pathological conditions associated with its overexpression. Inaccordance with this facet of the invention, an animal is treated withthe reagent and a reduced incidence of the pathological condition,compared to untreated animals bearing the transgene, would indicate apotential therapeutic intervention for the pathological condition.

[3298] Alternatively, non-human homologues of PRO can be used toconstruct a PRO “knock out” animal which has a defective or altered geneencoding PRO as a result of homologous recombination between theendogenous gene encoding PRO and altered genomic DNA encoding PROintroduced into an embryonic stem cell of the animal. For example, cDNAencoding PRO can be used to clone genomic DNA encoding PRO in accordancewith established techniques. A portion of the genomic DNA encoding PROcan be deleted or replaced with another gene, such as a gene encoding aselectable marker which can be used to monitor integration. Typically,several kilobases of unaltered flanking DNA (both at the 5′ and 3′ ends)are included in the vector [see e.g., Thomas and Capecchi, Cell, 51:503(1987) for a description of homologous recombination vectors]. Thevector is introduced into an embryonic stem cell line (e.g., byelectroporation) and cells in which the introduced DNA has homologouslyrecombined with the endogenous DNA are selected [see e.g., Li et al.,Cell, 69:915 (1992)]. The selected cells are then injected into ablastocyst of an animal (e.g., a mouse or rat) to form aggregationchimeras [see e.g., Bradley, in Teratocarcinomas and Embryonic StemCells: A Practical Approach, E. J. Robertson, ed. (IRL, Oxford, 1987),pp. 113-152]. A chimeric embryo can then be implanted into a suitablepseudopregnant female foster animal and the embryo brought to term tocreate a “knock out” animal. Progeny harboring the homologouslyrecombined DNA in their germ cells can be identified by standardtechniques and used to breed animals in which all cells of the animalcontain the homologously recombined DNA. Knockout animals can becharacterized for instance, for their ability to defend against certainpathological conditions and for their development of pathologicalconditions due to absence of the PRO polypeptide.

[3299] Nucleic acid encoding the PRO polypeptides may also be used ingene therapy. In gene therapy applications, genes are introduced intocells in order to achieve in vivo synthesis of a therapeuticallyeffective genetic product, for example for replacement of a defectivegene. “Gene therapy” includes both conventional gene therapy where alasting effect is achieved by a single treatment, and the administrationof gene therapeutic agents, which involves the one time or repeatedadministration of a therapeutically effective DNA or mRNA. AntisenseRNAs and DNAs can be used as therapeutic agents for blocking theexpression of certain genes in vivo. It has already been shown thatshort antisense oligonucleotides can be imported into cells where theyact as inhibitors, despite their low intracellular concentrations causedby their restricted uptake by the cell membrane. (Zamecnik et al., Proc.Natl. Acad. Sci. USA 83:4143-4146 [1986]). The oligonucleotides can bemodified to enhance their uptake, e.g. by substituting their negativelycharged phosphodiester groups by uncharged groups.

[3300] There are a variety of techniques available for introducingnucleic acids into viable cells. The techniques vary depending uponwhether the nucleic acid is transferred into cultured cells in vitro, orin vivo in the cells of the intended host. Techniques suitable for thetransfer of nucleic acid into mammalian cells in vitro include the useof liposomes, electroporation, microinjection, cell fusion,DEAE-dextran, the calcium phosphate precipitation method, etc. Thecurrently preferred in vivo gene transfer techniques includetransfection with viral (typically retroviral) vectors and viral coatprotein-liposome mediated transfection (Dzau et al., Trends inBiotechnology 11, 205-210 [1993]). In some situations it is desirable toprovide the nucleic acid source with an agent that targets the targetcells, such as an antibody specific for a cell surface membrane proteinor the target cell, a ligand for a receptor on the target cell, etc.Where liposomes are employed, proteins which bind to a cell surfacemembrane protein associated with endocytosis may be used for targetingand/or to facilitate uptake, e.g. capsid proteins or fragments thereoftropic for a particular cell type, antibodies for proteins which undergointernalization in cycling, proteins that target intracellularlocalization and enhance intracellular half-life. The technique ofreceptor-mediated endocytosis is described, for example, by Wu et al.,J. Biol. Chem. 262, 4429-4432 (1987); and Wagner et al., Proc. Natl.Acad. Sci. USA 87, 3410-3414 (1990). For review of gene marking and genetherapy protocols see Anderson et al., Science 256, 808-813 (1992).

[3301] The PRO polypeptides described herein may also be employed asmolecular weight markers for protein electrophoresis purposes and theisolated nucleic acid sequences may be used for recombinantly expressingthose markers.

[3302] The nucleic acid molecules encoding the PRO polypeptides orfragments thereof described herein are useful for chromosomeidentification. In this regard, there exists an ongoing need to identifynew chromosome markers, since relatively few chromosome markingreagents, based upon actual sequence data are presently available. EachPRO nucleic acid molecule of the present invention can be used as achromosome marker.

[3303] The PRO polypeptides and nucleic acid molecules of the presentinvention may also be used for tissue typing, wherein the PROpolypeptides of the present invention may be differentially expressed inone tissue as compared to another. PRO nucleic acid molecules will finduse for generating probes for PCR, Northern analysis, Southern analysisand Western analysis.

[3304] The PRO polypeptides described herein may also be employed astherapeutic agents. The PRO polypeptides of the present invention can beformulated according to known methods to prepare pharmaceutically usefulcompositions, whereby the PRO product hereof is combined in admixturewith a pharmaceutically acceptable carrier vehicle. Therapeuticformulations are prepared for storage by mixing the active ingredienthaving the desired degree of purity with optional physiologicallyacceptable carriers, excipients or stabilizers (Remington'sPharmaceutical Sciences 16th edition, Osol, A. Ed. (1980)), in the formof lyophilized formulations or aqueous solutions. Acceptable carriers,excipients or stabilizers are nontoxic to recipients at the dosages andconcentrations employed, and include buffers such as phosphate, citrateand other organic acids; antioxidants including ascorbic acid; lowmolecular weight (less than about 10 residues) polypeptides; proteins,such as serum albumin, gelatin or immunoglobulins; hydrophilic polymerssuch as polyvinylpyrrolidone, amino acids such as glycine, glutamine,asparagine, arginine or lysine; monosaccharides, disaccharides and othercarbohydrates including glucose, mannose, or dextrins; chelating agentssuch as EDTA; sugar alcohols such as mannitol or sorbitol; salt-formingcounterions such as sodium; and/or nonionic surfactants such as TWEEN™,PLURONICS™ or PEG.

[3305] The formulations to be used for in vivo administration must besterile. This is readily accomplished by filtration through sterilefiltration membranes, prior to or following lyophilization andreconstitution.

[3306] Therapeutic compositions herein generally are placed into acontainer having a sterile access port, for example, an intravenoussolution bag or vial having a stopper pierceable by a hypodermicinjection needle.

[3307] The route of administration is in accord with known methods, e.g.injection or infusion by intravenous, intraperitoneal, intracerebral,intramuscular, intraocular, intraarterial or intralesional routes,topical administration, or by sustained release systems.

[3308] Dosages and desired drug concentrations of pharmaceuticalcompositions of the present invention may vary depending on theparticular use envisioned. The determination of the appropriate dosageor route of administration is well within the skill of an ordinaryphysician. Animal experiments provide reliable guidance for thedetermination of effective doses for human therapy. Interspecies scalingof effective doses can be performed following the principles laid downby Mordenti, J. and Chappell, W. “The use of interspecies scaling intoxicokinetics” In Toxicokinetics and New Drug Development, Yacobi etal., Eds., Pergamon Press, New York 1989, pp. 42-96.

[3309] When in vivo administration of a PRO polypeptide or agonist orantagonist thereof is employed, normal dosage amounts may vary fromabout 10 ng/kg to up to 100 mg/kg of mammal body weight or more per day,preferably about 1 μg/kg/day to 10 mg/kg/day, depending upon the routeof administration. Guidance as to particular dosages and methods ofdelivery is provided in the literature; see, for example, U.S. Pat. Nos.4,657,760; 5,206,344; or 5,225,212. It is anticipated that differentformulations will be effective for different treatment compounds anddifferent disorders, that administration targeting one organ or tissue,for example, may necessitate delivery in a manner different from that toanother organ or tissue.

[3310] Where sustained-release administration of a PRO polypeptide isdesired in a formulation with release characteristics suitable for thetreatment of any disease or disorder requiring administration of the PROpolypeptide, microencapsulation of the PRO polypeptide is contemplated.Microencapsulation of recombinant proteins for sustained release hasbeen successfully performed with human growth hormone (rhGH),interferon-(rhIFN-), interleukin-2, and MN rgp120. Johnson et al., Nat.Med., 2:795-799 (1996); Yasuda, Biomed. Ther., 27:1221-1223 (1993); Horaet al., Bio/Technology, 8:755-758 (1990); Cleland, “Design andProduction of Single Immunization Vaccines Using PolylactidePolyglycolide Microsphere Systems,” in Vaccine Design: The Subunit andAdjuvant Approach, Powell and Newman, eds, (Plenum Press: New York,1995), pp. 439-462; WO 97/03692, WO 96/40072, WO 96/07399; and U.S. Pat.No. 5,654,010.

[3311] The sustained-release formulations of these proteins weredeveloped using poly-lactic-coglycolic acid (PLGA) polymer due to itsbiocompatibility and wide range of biodegradable properties. Thedegradation products of PLGA, lactic and glycolic acids, can be clearedquickly within the human body. Moreover, the degradability of thispolymer can be adjusted from months to years depending on its molecularweight and composition. Lewis, “Controlled release of bioactive agentsfrom lactide/glycolide polymer,” in: M. Chasin and R. Langer (Eds.),Biodegradable Polymers as Drug Delivery Systems (Marcel Dekker: NewYork, 1990), pp. 1-41.

[3312] This invention encompasses methods of screening compounds toidentify those that mimic the PRO polypeptide (agonists) or prevent theeffect of the PRO polypeptide (antagonists). Screening assays forantagonist drug candidates are designed to identify compounds that bindor complex with the PRO polypeptides encoded by the genes identifiedherein, or otherwise interfere with the interaction of the encodedpolypeptides with other cellular proteins. Such screening assays willinclude assays amenable to high-throughput screening of chemicallibraries, making them particularly suitable for identifying smallmolecule drug candidates.

[3313] The assays can be performed in a variety of formats, includingprotein-protein binding assays, biochemical screening assays,immunoassays, and cell-based assays, which are well characterized in theart.

[3314] All assays for antagonists are common in that they call forcontacting the drug candidate with a PRO polypeptide encoded by anucleic acid identified herein under conditions and for a timesufficient to allow these two components to interact.

[3315] In binding assays, the interaction is binding and the complexformed can be isolated or detected in the reaction mixture. In aparticular embodiment, the PRO polypeptide encoded by the geneidentified herein or the drug candidate is immobilized on a solid phase,e.g., on a microtiter plate, by covalent or non-covalent attachments.Non-covalent attachment generally is accomplished by coating the solidsurface with a solution of the PRO polypeptide and drying.Alternatively, an immobilized antibody, e.g., a monoclonal antibody,specific for the PRO polypeptide to be immobilized can be used to anchorit to a solid surface. The assay is performed by adding thenon-immobilized component, which may be labeled by a detectable label,to the immobilized component, e.g., the coated surface containing theanchored component. When the reaction is complete, the non-reactedcomponents are removed, e.g., by washing, and complexes anchored on thesolid surface are detected. When the originally non-immobilizedcomponent carries a detectable label, the detection of label immobilizedon the surface indicates that complexing occurred. Where the originallynon-immobilized component does not carry a label, complexing can bedetected, for example, by using a labeled antibody specifically bindingthe immobilized complex.

[3316] If the candidate compound interacts with but does not bind to aparticular PRO polypeptide encoded by a gene identified herein, itsinteraction with that polypeptide can be assayed by methods well knownfor detecting protein-protein interactions. Such assays includetraditional approaches, such as, e.g., cross-linking,co-immunoprecipitation, and co-purification through gradients orchromatographic columns. In addition, protein-protein interactions canbe monitored by using a yeast-based genetic system described by Fieldsand co-workers (Fields and Song, Nature (London), 340:245-246 (1989);Chien et al., Proc. Natl. Acad. Sci. USA, 88:9578-9582 (1991)) asdisclosed by Chevray and Nathans, Proc. Natl. Acad. Sci. USA, 89:5789-5793 (1991). Many transcriptional activators, such as yeast GALA,consist of two physically discrete modular domains, one acting as theDNA-binding domain, the other one functioning as thetranscription-activation domain. The yeast expression system describedin the foregoing publications (generally referred to as the “two-hybridsystem”) takes advantage of this property, and employs two hybridproteins, one in which the target protein is fused to the DNA-bindingdomain of GAL4, and another, in which candidate activating proteins arefused to the activation domain. The expression of a GAL1-lacZ reportergene under control of a GAL4-activated promoter depends onreconstitution of GAL4 activity via protein-protein interaction.Colonies containing interacting polypeptides are detected with achromogenic substrate for β-galactosidase. A complete kit (MATCHMAKER™)for identifying protein-protein interactions between two specificproteins using the two-hybrid technique is commercially available fromClontech. This system can also be extended to map protein domainsinvolved in specific protein interactions as well as to pinpoint aminoacid residues that are crucial for these interactions.

[3317] Compounds that interfere with the interaction of a gene encodinga PRO polypeptide identified herein and other intra- or extracellularcomponents can be tested as follows: usually a reaction mixture isprepared containing the product of the gene and the intra- orextracellular component under conditions and for a time allowing for theinteraction and binding of the two products. To test the ability of acandidate compound to inhibit binding, the reaction is run in theabsence and in the presence of the test compound. In addition, a placebomay be added to a third reaction mixture, to serve as positive control.The binding (complex formation) between the test compound and the intra-or extracellular component present in the mixture is monitored asdescribed hereinabove. The formation of a complex in the controlreaction(s) but not in the reaction mixture containing the test compoundindicates that the test compound interferes with the interaction of thetest compound and its reaction partner.

[3318] To assay for antagonists, the PRO polypeptide may be added to acell along with the compound to be screened for a particular activityand the ability of the compound to inhibit the activity of interest inthe presence of the PRO polypeptide indicates that the compound is anantagonist to the PRO polypeptide. Alternatively, antagonists may bedetected by combining the PRO polypeptide and a potential antagonistwith membrane-bound PRO polypeptide receptors or recombinant receptorsunder appropriate conditions for a competitive inhibition assay. The PROpolypeptide can be labeled, such as by radioactivity, such that thenumber of PRO polypeptide molecules bound to the receptor can be used todetermine the effectiveness of the potential antagonist. The geneencoding the receptor can be identified by numerous methods known tothose of skill in the art, for example, ligand panning and FACS sorting.Coligan et al., Current Protocols in Immun., 1(2): Chapter 5 (1991).Preferably, expression cloning is employed wherein polyadenylated RNA isprepared from a cell responsive to the PRO polypeptide and a cDNAlibrary created from this RNA is divided into pools and used totransfect COS cells or other cells that are not responsive to the PROpolypeptide. Transfected cells that are grown on glass slides areexposed to labeled PRO polypeptide. The PRO polypeptide can be labeledby a variety of means including iodination or inclusion of a recognitionsite for a site-specific protein kinase. Following fixation andincubation, the slides are subjected to autoradiographic analysis.Positive pools are identified and sub-pools are prepared andre-transfected using an interactive sub-pooling and re-screeningprocess, eventually yielding a single clone that encodes the putativereceptor.

[3319] As an alternative approach for receptor identification, labeledPRO polypeptide can be photoaffinity-linked with cell membrane orextract preparations that express the receptor molecule. Cross-linkedmaterial is resolved by PAGE and exposed to X-ray film. The labeledcomplex containing the receptor can be excised, resolved into peptidefragments, and subjected to protein micro-sequencing. The amino acidsequence obtained from micro-sequencing would be used to design a set ofdegenerate oligonucleotide probes to screen a cDNA library to identifythe gene encoding the putative receptor.

[3320] In another assay for antagonists, mammalian cells or a membranepreparation expressing the receptor would be incubated with labeled PROpolypeptide in the presence of the candidate compound. The ability ofthe compound to enhance or block this interaction could then bemeasured.

[3321] More specific examples of potential antagonists include anoligonucleotide that binds to the fusions of immunoglobulin with PROpolypeptide, and, in particular, antibodies including, withoutlimitation, poly- and monoclonal antibodies and antibody fragments,single-chain antibodies, anti-idiotypic antibodies, and chimeric orhumanized versions of such antibodies or fragments, as well as humanantibodies and antibody fragments. Alternatively, a potential antagonistmay be a closely related protein, for example, a mutated form of the PROpolypeptide that recognizes the receptor but imparts no effect, therebycompetitively inhibiting the action of the PRO polypeptide.

[3322] Another potential PRO polypeptide antagonist is an antisense RNAor DNA construct prepared using antisense technology, where, e.g., anantisense RNA or DNA molecule acts to block directly the translation ofmRNA by hybridizing to targeted mRNA and preventing protein translation.Antisense technology can be used to control gene expression throughtriple-helix formation or antisense DNA or RNA, both of which methodsare based on binding of a polynucleotide to DNA or RNA. For example, the5′ coding portion of the polynucleotide sequence, which encodes themature PRO polypeptides herein, is used to design an antisense RNAoligonucleotide of from about 10 to 40 base pairs in length. A DNAoligonucleotide is designed to be complementary to a region of the geneinvolved in transcription (triple helix—see Lee et al., Nucl. AcidsRes., 6:3073 (1979); Cooney et al., Science, 241: 456 (1988); Dervan etal., Science, 251:1360 (1991)), thereby preventing transcription and theproduction of the PRO polypeptide. The antisense RNA oligonucleotidehybridizes to the mRNA in vivo and blocks translation of the mRNAmolecule into the PRO polypeptide (antisense—Okano, Neurochem., 56:560(1991); Oligodeoxynucleotides as Antisense Inhibitors of Gene Expression(CRC Press: Boca Raton, Fla., 1988). The oligonucleotides describedabove can also be delivered to cells such that the antisense RNA or DNAmay be expressed in vivo to inhibit production of the PRO polypeptide.When antisense DNA is used, oligodeoxyribonucleotides derived from thetranslation-initiation site, e.g., between about −10 and +10 positionsof the target gene nucleotide sequence, are preferred.

[3323] Potential antagonists include small molecules that bind to theactive site, the receptor binding site, or growth factor or otherrelevant binding site of the PRO polypeptide, thereby blocking thenormal biological activity of the PRO polypeptide. Examples of smallmolecules include, but are not limited to, small peptides orpeptide-like molecules, preferably soluble peptides, and syntheticnon-peptidyl organic or inorganic compounds.

[3324] Ribozymes are enzymatic RNA molecules capable of catalyzing thespecific cleavage of RNA. Ribozymes act by sequence-specifichybridization to the complementary target RNA, followed byendonucleolytic cleavage. Specific ribozyme cleavage sites within apotential RNA target can be identified by known techniques. For furtherdetails see, e.g., Rossi, Current Biology, 4:469-471 (1994), and PCTpublication No. WO 97/33551 (published Sep. 18, 1997).

[3325] Nucleic acid molecules in triple-helix formation used to inhibittranscription should be single-stranded and composed ofdeoxynucleotides. The base composition of these oligonucleotides isdesigned such that it promotes triple-helix formation via Hoogsteenbase-pairing rules, which generally require sizeable stretches ofpurines or pyrimidines on one strand of a duplex. For further detailssee, e.g., PCT publication No. WO 97/33551, supra.

[3326] These small molecules can be identified by any one or more of thescreening assays discussed hereinabove and/or by any other screeningtechniques well known for those skilled in the art.

[3327] Uses of the herein disclosed molecules may also be based upon thepositive functional assay hits disclosed and described below.

F. Anti-PRO Antibodies

[3328] The present invention further provides anti-PRO antibodies.Exemplary antibodies include polyclonal, monoclonal, humanized,bispecific, and heteroconjugate antibodies.

1. Polyclonal Antibodies

[3329] The anti-PRO antibodies may comprise polyclonal antibodies.Methods of preparing polyclonal antibodies are known to the skilledartisan. Polyclonal antibodies can be raised in a mammal, for example,by one or more injections of an immunizing agent and, if desired, anadjuvant. Typically, the immunizing agent and/or adjuvant will beinjected in the mammal by multiple subcutaneous or intraperitonealinjections. The immunizing agent may include the PRO polypeptide or afusion protein thereof. It may be useful to conjugate the immunizingagent to a protein known to be immunogenic in the mammal beingimmunized. Examples of such immunogenic proteins include but are notlimited to keyhole limpet hemocyanin, serum albumin, bovinethyroglobulin, and soybean trypsin inhibitor. Examples of adjuvantswhich may be employed include Freund's complete adjuvant and MPL-TDMadjuvant (monophosphoryl Lipid A, synthetic trehalose dicorynomycolate).The immunization protocol may be selected by one skilled in the artwithout undue experimentation.

2. Monoclonal Antibodies

[3330] The anti-PRO antibodies may, alternatively, be monoclonalantibodies. Monoclonal antibodies may be prepared using hybridomamethods, such as those described by Kohler and Milstein, Nature, 256:495(1975). In a hybridoma method, a mouse, hamster, or other appropriatehost animal, is typically immunized with an immunizing agent to elicitlymphocytes that produce or are capable of producing antibodies thatwill specifically bind to the immunizing agent. Alternatively, thelymphocytes may be immunized in vitro.

[3331] The immunizing agent will typically include the PRO polypeptideor a fusion protein thereof. Generally, either peripheral bloodlymphocytes (“PBLs”) are used if cells of human origin are desired, orspleen cells or lymph node cells are used if non-human mammalian sourcesare desired. The lymphocytes are then fused with an immortalized cellline using a suitable fusing agent, such as polyethylene glycol, to forma hybridoma cell [Goding, Monoclonal Antibodies: Principles andPractice, Academic Press, (1986) pp. 59-103]. Immortalized cell linesare usually transformed mammalian cells, particularly myeloma cells ofrodent, bovine and human origin. Usually, rat or mouse myeloma celllines are employed. The hybridoma cells may be cultured in a suitableculture medium that preferably contains one or more substances thatinhibit the growth or survival of the unfused, immortalized cells. Forexample, if the parental cells lack the enzyme hypoxanthine guaninephosphoribosyl transferase (HGPRT or HPRT), the culture medium for thehybridomas typically will include hypoxanthine, aminopterin, andthymidine (“HAT medium”), which substances prevent the growth ofHGPRT-deficient cells.

[3332] Preferred immortalized cell lines are those that fuseefficiently, support stable high level expression of antibody by theselected antibody-producing cells, and are sensitive to a medium such asHAT medium. More preferred immortalized cell lines are murine myelomalines, which can be obtained, for instance, from the Salk Institute CellDistribution Center, San Diego, Calif. and the American Type CultureCollection, Manassas, Va. Human myeloma and mouse-human heteromyelomacell lines also have been described for the production of humanmonoclonal antibodies [Kozbor, J. Immunol., 133:3001 (1984); Brodeur etal., Monoclonal Antibody Production Techniques and Applications, MarcelDekker, Inc., New York, (1987) pp. 51-63].

[3333] The culture medium in which the hybridoma cells are cultured canthen be assayed for the presence of monoclonal antibodies directedagainst PRO. Preferably, the binding specificity of monoclonalantibodies produced by the hybridoma cells is determined byimmunoprecipitation or by an in vitro binding assay, such asradioimmunoassay (RIA) or enzyme-linked immunoabsorbent assay (ELISA).Such techniques and assays are known in the art. The binding affinity ofthe monoclonal antibody can, for example, be determined by the Scatchardanalysis of Munson and Pollard, Anal. Biochem., 107:220 (1980).

[3334] After the desired hybridoma cells are identified, the clones maybe subcloned by limiting dilution procedures and grown by standardmethods [Goding, supra]. Suitable culture media for this purposeinclude, for example, Dulbecco's Modified Eagle's Medium and RPMI-1640medium. Alternatively, the hybridoma cells may be grown in vivo asascites in a mammal.

[3335] The monoclonal antibodies secreted by the subclones may beisolated or purified from the culture medium or ascites fluid byconventional immunoglobulin purification procedures such as, forexample, protein A-Sepharose, hydroxylapatite chromatography, gelelectrophoresis, dialysis, or affinity chromatography.

[3336] The monoclonal antibodies may also be made by recombinant DNAmethods, such as those described in U.S. Pat. No. 4,816,567. DNAencoding the monoclonal antibodies of the invention can be readilyisolated and sequenced using conventional procedures (e.g., by usingoligonucleotide probes that are capable of binding specifically to genesencoding the heavy and light chains of murine antibodies). The hybridomacells of the invention serve as a preferred source of such DNA. Onceisolated, the DNA may be placed into expression vectors, which are thentransfected into host cells such as simian COS cells, Chinese hamsterovary (CHO) cells, or myeloma cells that do not otherwise produceimmunoglobulin protein, to obtain the synthesis of monoclonal antibodiesin the recombinant host cells. The DNA also may be modified, forexample, by substituting the coding sequence for human heavy and lightchain constant domains in place of the homologous murine sequences [U.S.Pat. No. 4,816,567; Morrison et al., supra] or by covalently joining tothe immunoglobulin coding sequence all or part of the coding sequencefor a non-immunoglobulin polypeptide. Such a non-immunoglobulinpolypeptide can be substituted for the constant domains of an antibodyof the invention, or can be substituted for the variable domains of oneantigen-combining site of an antibody of the invention to create achimeric bivalent antibody.

[3337] The antibodies may be monovalent antibodies. Methods forpreparing monovalent antibodies are well known in the art. For example,one method involves recombinant expression of immunoglobulin light chainand modified heavy chain. The heavy chain is truncated generally at anypoint in the Fc region so as to prevent heavy chain crosslinking.Alternatively, the relevant cysteine residues are substituted withanother amino acid residue or are deleted so as to prevent crosslinking.

[3338] In vitro methods are also suitable for preparing monovalentantibodies. Digestion of antibodies to produce fragments thereof,particularly, Fab fragments, can be accomplished using routinetechniques known in the art.

3. Human and Humanized Antibodies

[3339] The anti-PRO antibodies of the invention may further comprisehumanized antibodies or human antibodies. Humanized forms of non-human(e.g., murine) antibodies are chimeric immunoglobulins, immunoglobulinchains or fragments thereof (such as Fv, Fab, Fab′, F(ab′)₂ or otherantigen-binding subsequences of antibodies) which contain minimalsequence derived from non-human immunoglobulin. Humanized antibodiesinclude human immunoglobulins (recipient antibody) in which residuesfrom a complementary determining region (CDR) of the recipient arereplaced by residues from a CDR of a non-human species (donor antibody)such as mouse, rat or rabbit having the desired specificity, affinityand capacity. In some instances, Fv framework residues of the humanimmunoglobulin are replaced by corresponding non-human residues.Humanized antibodies may also comprise residues which are found neitherin the recipient antibody nor in the imported CDR or frameworksequences. In general, the humanized antibody will comprisesubstantially all of at least one, and typically two, variable domains,in which all or substantially all of the CDR regions correspond to thoseof a non-human immunoglobulin and all or substantially all of the FRregions are those of a human immunoglobulin consensus sequence. Thehumanized antibody optimally also will comprise at least a portion of animmunoglobulin constant region (Fc), typically that of a humanimmunoglobulin [Jones et al., Nature, 321:522-525 (1986); Riechmann etal., Nature, 332:323-329 (1988); and Presta, Curr. Op. Struct. Biol.,2:593-596 (1992)].

[3340] Methods for humanizing non-human antibodies are well known in theart. Generally, a humanized antibody has one or more amino acid residuesintroduced into it from a source which is non-human. These non-humanamino acid residues are often referred to as “import” residues, whichare typically taken from an “import” variable domain. Humanization canbe essentially performed following the method of Winter and co-workers[Jones et al., Nature, 321:522-525 (1986); Riechmann et al., Nature,332:323-327 (1988); Verhoeyen et al., Science, 239:1534-1536 (1988)], bysubstituting rodent CDRs or CDR sequences for the correspondingsequences of a human antibody. Accordingly, such “humanized” antibodiesare chimeric antibodies (U.S. Pat. No. 4,816,567), wherein substantiallyless than an intact human variable domain has been substituted by thecorresponding sequence from a non-human species. In practice, humanizedantibodies are typically human antibodies in which some CDR residues andpossibly some FR residues are substituted by residues from analogoussites in rodent antibodies.

[3341] Human antibodies can also be produced using various techniquesknown in the art, including phage display libraries [Hoogenboom andWinter, J. Mol. Biol., 227:381 (1991); Marks et al., J. Mol. Biol.,222:581 (1991)]. The techniques of Cole et al. and Boerner et al. arealso available for the preparation of human monoclonal antibodies (Coleet al., Monoclonal Antibodies and Cancer Therapy, Alan R. Liss, p. 77(1985) and Boerner et al., J. Immunol., 147(1):86-95 (1991)]. Similarly,human antibodies can be made by introducing of human immunoglobulin lociinto transgenic animals, e.g., mice in which the endogenousimmunoglobulin genes have been partially or completely inactivated. Uponchallenge, human antibody production is observed, which closelyresembles that seen in humans in all respects, including generearrangement, assembly, and antibody repertoire. This approach isdescribed, for example, in U.S. Pat. Nos. 5,545,807; 5,545,806;5,569,825; 5,625,126; 5,633,425; 5,661,016, and in the followingscientific publications: Marks et al., Bio/Technology 10, 779-783(1992); Lonberg et al., Nature 368 856-859 (1994); Morrison, Nature 368,812-13 (1994); Fishwild et al., Nature Biotechnology 14, 845-51 (1996);Neuberger, Nature Biotechnology 14, 826 (1996); Lonberg and Huszar,Intern. Rev. Immunol. 13 65-93 (1995).

4. Bispecific Antibodies

[3342] Bispecific antibodies are monoclonal, preferably human orhumanized, antibodies that have binding specificities for at least twodifferent antigens. In the present case, one of the bindingspecificities is for the PRO, the other one is for any other antigen,and preferably for a cell-surface protein or receptor or receptorsubunit.

[3343] Methods for making bispecific antibodies are known in the art.Traditionally, the recombinant production of bispecific antibodies isbased on the co-expression of two immunoglobulin heavy-chain/light-chainpairs, where the two heavy chains have different specificities [Milsteinand Cuello, Nature, 305:537-539 (1983)]. Because of the randomassortment of immunoglobulin heavy and light chains, these hybridomas(quadromas) produce a potential mixture of ten different antibodymolecules, of which only one has the correct bispecific structure. Thepurification of the correct molecule is usually accomplished by affinitychromatography steps. Similar procedures are disclosed in WO 93/08829,published May 13, 1993, and in Traunecker et al., EMBO J., 10:3655-3659(1991).

[3344] Antibody variable domains with the desired binding specificities(antibody-antigen combining sites) can be fused to immunoglobulinconstant domain sequences. The fusion preferably is with animmunoglobulin heavy-chain constant domain, comprising at least part ofthe hinge, CH2, and CH3 regions. It is preferred to have the firstheavy-chain constant region (CH1) containing the site necessary forlight-chain binding present in at least one of the fusions. DNAsencoding the immunoglobulin heavy-chain fusions and, if desired, theimmunoglobulin light chain, are inserted into separate expressionvectors, and are co-transfected into a suitable host organism. Forfurther details of generating bispecific antibodies see, for example,Suresh et al., Methods in Enzymology, 121:210 (1986).

[3345] According to another approach described in WO 96/27011, theinterface between a pair of antibody molecules can be engineered tomaximize the percentage of heterodimers which are recovered fromrecombinant cell culture. The preferred interface comprises at least apart of the CH3 region of an antibody constant domain. In this method,one or more small amino acid side chains from the interface of the firstantibody molecule are replaced with larger side chains (e.g. tyrosine ortryptophan). Compensatory “cavities” of identical or similar size to thelarge side chain(s) are created on the interface of the second antibodymolecule by replacing large amino acid side chains with smaller ones(e.g. alanine or threonine). This provides a mechanism for increasingthe yield of the heterodimer over other unwanted end-products such ashomodimers.

[3346] Bispecific antibodies can be prepared as full length antibodiesor antibody fragments (e.g. F(ab′)₂ bispecific antibodies). Techniquesfor generating bispecific antibodies from antibody fragments have beendescribed in the literature. For example, bispecific antibodies can beprepared can be prepared using chemical linkage. Brennan et al., Science229:81 (1985) describe a procedure wherein intact antibodies areproteolytically cleaved to generate F(ab′)₂ fragments. These fragmentsare reduced in the presence of the dithiol complexing agent sodiumarsenite to stabilize vicinal dithiols and prevent intermoleculardisulfide formation. The Fab′ fragments generated are then converted tothionitrobenzoate (TNB) derivatives. One of the Fab′-TNB derivatives isthen reconverted to the Fab′-thiol by reduction with mercaptoethylamineand is mixed with an equimolar amount of the other Fab′-TNB derivativeto form the bispecific antibody. The bispecific antibodies produced canbe used as agents for the selective immobilization of enzymes.

[3347] Fab′ fragments may be directly recovered from E. coli andchemically coupled to form bispecific antibodies. Shalaby et al., J.Exp. Med. 175:217-225 (1992) describe the production of a fullyhumanized bispecific antibody F(ab′)₂ molecule. Each Fab′ fragment wasseparately secreted from E. coli and subjected to directed chemicalcoupling in vitro to form the bispecific antibody. The bispecificantibody thus formed was able to bind to cells overexpressing the ErbB2receptor and normal human T cells, as well as trigger the lytic activityof human cytotoxic lymphocytes against human breast tumor targets.

[3348] Various technique for making and isolating bispecific antibodyfragments directly from recombinant cell culture have also beendescribed. For example, bispecific antibodies have been produced usingleucine zippers. Kostelny et al., J. Immunol. 148(5):1547-1553 (1992).The leucine zipper peptides from the Fos and Jun proteins were linked tothe Fab′ portions of two different antibodies by gene fusion. Theantibody homodimers were reduced at the hinge region to form monomersand then re-oxidized to form the antibody heterodimers. This method canalso be utilized for the production of antibody homodimers. The“diabody” technology described by Hollinger et al., Proc. Natl. Acad.Sci. USA 90:6444-6448 (1993) has provided an alternative mechanism formaking bispecific antibody fragments. The fragments comprise aheavy-chain variable domain (V_(H)) connected to a light-chain variabledomain (V_(L)) by a linker which is too short to allow pairing betweenthe two domains on the same chain. Accordingly, the V_(H) and V_(L)domains of one fragment are forced to pair with the complementary V_(L)and V_(H) domains of another fragment, thereby forming twoantigen-binding sites. Another strategy for making bispecific antibodyfragments by the use of single-chain Fv (sFv) dimers has also beenreported. See, Gruber et al., J. Immunol. 152:5368 (1994). Antibodieswith more than two valencies are contemplated. For example, trispecificantibodies can be prepared. Tutt et al., J. Immunol. 147:60 (1991).

[3349] Exemplary bispecific antibodies may bind to two differentepitopes on a given PRO polypeptide herein. Alternatively, an anti-PROpolypeptide arm may be combined with an arm which binds to a triggeringmolecule on a leukocyte such as a T-cell receptor molecule (e.g. CD2,CD3, CD28, or B7), or Fc receptors for IgG (FcγR), such as FcγRI (CD64),FcγRII (CD32) and FcγRIII (CD16) so as to focus cellular defensemechanisms to the cell expressing the particular PRO polypeptide.Bispecific antibodies may also be used to localize cytotoxic agents tocells which express a particular PRO polypeptide. These antibodiespossess a PRO-binding arm and an arm which binds a cytotoxic agent or aradionuclide chelator, such as EOTUBE, DPTA, DOTA, or TETA. Anotherbispecific antibody of interest binds the PRO polypeptide and furtherbinds tissue factor (TF).

5. Heteroconjugate Antibodies

[3350] Heteroconjugate antibodies are also within the scope of thepresent invention. Heteroconjugate antibodies are composed of twocovalently joined antibodies. Such antibodies have, for example, beenproposed to target immune system cells to unwanted cells [U.S. Pat. No.4,676,980], and for treatment of HIV infection [WO 91/00360; WO92/200373; EP 03089]. It is contemplated that the antibodies may beprepared in vitro using known methods in synthetic protein chemistry,including those involving crosslinking agents. For example, immunotoxinsmay be constructed using a disulfide exchange reaction or by forming athioether bond. Examples of suitable reagents for this purpose includeiminothiolate and methyl4-mercaptobutyrimidate and those disclosed, forexample, in U.S. Pat. No. 4,676,980.

6. Effector Function Engineering

[3351] It may be desirable to modify the antibody of the invention withrespect to effector function, so as to enhance, e.g., the effectivenessof the antibody in treating cancer. For example, cysteine residue(s) maybe introduced into the Fc region, thereby allowing interchain disulfidebond formation in this region. The homodimeric antibody thus generatedmay have improved internalization capability and/or increasedcomplement-mediated cell killing and antibody-dependent cellularcytotoxicity (ADCC). See Caron et al., J. Exp Med., 176: 1191-1195(1992) and Shopes, J. Immunol., 148: 2918-2922 (1992). Homodimericantibodies with enhanced anti-tumor activity may also be prepared usingheterobifuntional cross-linkers as described in Wolff et al. CancerResearch, 53: 2560-2565 (1993). Alternatively, an antibody can beengineered that has dual Fc regions and may thereby have enhancedcomplement lysis and ADCC capabilities. See Stevenson et al.,Anti-Cancer Drug Design, 3: 219-230 (1989).

7. Immunoconjugates

[3352] The invention also pertains to immunoconjugates comprising anantibody conjugated to a cytotoxic agent such as a chemotherapeuticagent, toxin (e.g., an enzymatically active toxin of bacterial, fungal,plant, or animal origin, or fragments thereof), or a radioactive isotope(i.e., a radioconjugate).

[3353] Chemotherapeutic agents useful in the generation of suchimmunoconjugates have been described above. Enzymatically active toxinsand fragments thereof that can be used include diphtheria A chain,nonbinding active fragments of diphtheria toxin, exotoxin A chain (fromPseudomonas aeruginosa), ricin A chain, abrin A chain, modeccin A chain,alpha-sarcin, Aleurites fordii proteins, dianthin proteins, Phytolacaamericana proteins (PAPI, PAPII, and PAP-S), momordica charantiainhibitor, curcin, crotin, sapaonaria officinalis inhibitor, gelonin,mitogellin, restrictocin, phenomycin, enomycin, and the tricothecenes. Avariety of radionuclides are available for the production ofradioconjugated antibodies. Examples include ²¹²Bi, ¹³¹I, ¹³¹In, ⁹⁰Y,and ¹⁸⁶Re.

[3354] Conjugates of the antibody and cytotoxic agent are made using avariety of bifunctional protein-coupling agents such asN-succinimidyl-3-(2-pyridyldithiol) propionate (SPDP), iminothiolane(IT), bifunctional derivatives of imidoesters (such as dimethyladipimidate HCL), active esters (such as disuccinimidyl suberate),aldehydes (such as glutareldehyde), bis-azido compounds (such as bis(p-azidobenzoyl) hexanediamine), bis-diazonium derivatives (such asbis-(p-diazoniumbenzoyl)-ethylenedianine), diisocyanates (such astolyene 2,6-diisocyanate), and bis-active fluorine compounds (such as1,5-difluoro-2,4-dinitrobenzene). For example, a ricin immunotoxin canbe prepared as described in Vitetta et al., Science, 238: 1098 (1987).Carbon-14-labeled 1-isothiocyanatobenzyl-3-methyldiethylenetriaminepentaacetic acid (MX-DTPA) is an exemplary chelating agent forconjugation of radionucleotide to the antibody. See WO94/11026.

[3355] In another embodiment, the antibody may be conjugated to a“receptor” (such streptavidin) for utilization in tumor pretargetingwherein the antibody-receptor conjugate is administered to the patient,followed by removal of unbound conjugate from the circulation using aclearing agent and then administration of a “ligand” (e.g., avidin) thatis conjugated to a cytotoxic agent (e.g., a radionucleotide).

8. Immunoliposomes

[3356] The antibodies disclosed herein may also be formulated asimmunoliposomes. Liposomes containing the antibody are prepared bymethods known in the art, such as described in Epstein et al., Proc.Natl. Acad. Sci. USA, 82: 3688 (1985); Hwang et al., Proc. Natl Acad.Sci. USA, 77: 4030 (1980); and U.S. Pat. Nos. 4,485,045 and 4,544,545.Liposomes with enhanced circulation time are disclosed in U.S. Pat. No.5,013,556.

[3357] Particularly useful liposomes can be generated by thereverse-phase evaporation method with a lipid composition comprisingphosphatidylcholine, cholesterol, and PEG-derivatizedphosphatidylethanolamine (PEG-PE). Liposomes are extruded throughfilters of defined pore size to yield liposomes with the desireddiameter. Fab′ fragments of the antibody of the present invention can beconjugated to the liposomes as described in Martin et al., J. Biol.Chem., 257: 286-288 (1982) via a disulfide-interchange reaction. Achemotherapeutic agent (such as Doxorubicin) is optionally containedwithin the liposome. See Gabizon et al., J. National Cancer Inst.,81(19): 1484 (1989).

9. Pharmaceutical Compositions of Antibodies

[3358] Antibodies specifically binding a PRO polypeptide identifiedherein, as well as other molecules identified by the screening assaysdisclosed hereinbefore, can be administered for the treatment of variousdisorders in the form of pharmaceutical compositions.

[3359] If the PRO polypeptide is intracellular and whole antibodies areused as inhibitors, internalizing antibodies are preferred. However,lipofections or liposomes can also be used to deliver the antibody, oran antibody fragment, into cells. Where antibody fragments are used, thesmallest inhibitory fragment that specifically binds to the bindingdomain of the target protein is preferred. For example, based upon thevariable-region sequences of an antibody, peptide molecules can bedesigned that retain the ability to bind the target protein sequence.Such peptides can be synthesized chemically and/or produced byrecombinant DNA technology. See, e.g., Marasco et al., Proc. Natl. Acad.Sci. USA, 90: 7889-7893 (1993). The formulation herein may also containmore than one active compound as necessary for the particular indicationbeing treated, preferably those with complementary activities that donot adversely affect each other. Alternatively, or in addition, thecomposition may comprise an agent that enhances its function, such as,for example, a cytotoxic agent, cytokine, chemotherapeutic agent, orgrowth-inhibitory agent. Such molecules are suitably present incombination in amounts that are effective for the purpose intended.

[3360] The active ingredients may also be entrapped in microcapsulesprepared, for example, by coacervation techniques or by interfacialpolymerization, for example, hydroxymethylcellulose orgelatin-microcapsules and poly-(methylmethacylate) microcapsules,respectively, in colloidal drug delivery systems (for example,liposomes, albumin microspheres, microemulsions, nano-particles, andnanocapsules) or in macroemulsions. Such techniques are disclosed inRemington's Pharmaceutical Sciences, supra.

[3361] The formulations to be used for in vivo administration must besterile. This is readily accomplished by filtration through sterilefiltration membranes.

[3362] Sustained-release preparations may be prepared. Suitable examplesof sustained-release preparations include semipermeable matrices ofsolid hydrophobic polymers containing the antibody, which matrices arein the form of shaped articles, e.g., films, or microcapsules. Examplesof sustained-release matrices include polyesters, hydrogels (forexample, poly(2-hydroxyethyl-methacrylate), or poly(vinylalcohol)),polylactides (U.S. Pat. No. 3,773,919), copolymers of L-glutamic acidand γ ethyl-L-glutamate, non-degradable ethylene-vinyl acetate,degradable lactic acid-glycolic acid copolymers such as the LUPRONDEPOT™ (injectable microspheres composed of lactic acid-glycolic acidcopolymer and leuprolide acetate), and poly-D-(−)-3-hydroxybutyric acid.While polymers such as ethylene-vinyl acetate and lactic acid-glycolicacid enable release of molecules for over 100 days, certain hydrogelsrelease proteins for shorter time periods. When encapsulated antibodiesremain in the body for a long time, they may denature or aggregate as aresult of exposure to moisture at 37° C., resulting in a loss ofbiological activity and possible changes in immunogenicity. Rationalstrategies can be devised for stabilization depending on the mechanisminvolved. For example, if the aggregation mechanism is discovered to beintermolecular S-S bond formation through thio-disulfide interchange,stabilization may be achieved by modifying sulfhydryl residues,lyophilizing from acidic solutions, controlling moisture content, usingappropriate additives, and developing specific polymer matrixcompositions.

G. Uses for anti-PRO Antibodies

[3363] The anti-PRO antibodies of the invention have various utilities.For example, anti-PRO antibodies may be used in diagnostic assays forPRO, e.g., detecting its expression in specific cells, tissues, orserum. Various diagnostic assay techniques known in the art may be used,such as competitive binding assays, direct or indirect sandwich assaysand immunoprecipitation assays conducted in either heterogeneous orhomogeneous phases [Zola, Monoclonal Antibodies: A Manual of Techniques,CRC Press, Inc. (1987) pp. 147-158]. The antibodies used in thediagnostic assays can be labeled with a detectable moiety. Thedetectable moiety should be capable of producing, either directly orindirectly, a detectable signal. For example, the detectable moiety maybe a radioisotope, such as ³H, ¹⁴C, ³²P, ³⁵S, or ¹²⁵I, a fluorescent orchemiluminescent compound, such as fluorescein isothiocyanate,rhodamine, or luciferin, or an enzyme, such as alkaline phosphatase,beta-galactosidase or horseradish peroxidase. Any method known in theart for conjugating the antibody to the detectable moiety may beemployed, including those methods described by Hunter et al., Nature,144:945 (1962); David et al., Biochemistry, 13:1014 (1974); Pain et al.,J. Immunol. Meth., 40:219 (1981); and Nygren, J. Histochem. andCytochem., 30:407 (1982).

[3364] Anti-PRO antibodies also are useful for the affinity purificationof PRO from recombinant cell culture or natural sources. In thisprocess, the antibodies against PRO are immobilized on a suitablesupport, such a Sephadex resin or filter paper, using methods well knownin the art. The immobilized antibody then is contacted with a samplecontaining the PRO to be purified, and thereafter the support is washedwith a suitable solvent that will remove substantially all the materialin the sample except the PRO, which is bound to the immobilizedantibody. Finally, the support is washed with another suitable solventthat will release the PRO from the antibody.

[3365] The following examples are offered for illustrative purposesonly, and are not intended to limit the scope of the present inventionin any way.

[3366] All patent and literature references cited in the presentspecification are hereby incorporated by reference in their entirety.

EXAMPLES

[3367] Commercially available reagents referred to in the examples wereused according to manufacturer's instructions unless otherwiseindicated. The source of those cells identified in the followingexamples, and throughout the specification, by ATCC accession numbers isthe American Type Culture Collection, Manassas, Va.

Example 1 Extracellular Domain Homology Screening to Identify NovelPolypeptides and cDNA Encoding Therefor

[3368] The extracellular domain (ECD) sequences (including the secretionsignal sequence, if any) from about 950 known secreted proteins from theSwiss-Prot public database were used to search EST databases. The ESTdatabases included public databases (e.g., Dayhoff, GenBank), andproprietary databases (e.g. LIFESEQ™, Incyte Pharmaceuticals, Palo Alto,Calif.). The search was performed using the computer program BLAST orBLAST-2 (Altschul et al., Methods in Enzymology 266:460-480 (1996)) as acomparison of the ECD protein sequences to a 6 frame translation of theEST sequences. Those comparisons with a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into consensus DNA sequences with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.).

[3369] Using this extracellular domain homology screen, consensus DNAsequences were assembled relative to the other identified EST sequencesusing phrap. In addition, the consensus DNA sequences obtained wereoften (but not always) extended using repeated cycles of BLAST orBLAST-2 and phrap to extend the consensus sequence as far as possibleusing the sources of EST sequences discussed above.

[3370] Based upon the consensus sequences obtained as described above,oligonucleotides were then synthesized and used to identify by PCR acDNA library that contained the sequence of interest and for use asprobes to isolate a clone of the full-length coding sequence for a PROpolypeptide. Forward and reverse PCR primers generally range from 20 to30 nucleotides and are often designed to give a PCR product of about100-1000 bp in length. The probe sequences are typically 40-55 bp inlength. In some cases, additional oligonucleotides are synthesized whenthe consensus sequence is greater than about 1-1.5 kbp. In order toscreen several libraries for a full-length clone, DNA from the librarieswas screened by PCR amplification, as per Ausubel et al., CurrentProtocols in Molecular Biology, with the PCR primer pair. A positivelibrary was then used to isolate clones encoding the gene of interestusing the probe oligonucleotide and one of the primer pairs.

[3371] The cDNA libraries used to isolate the cDNA clones wereconstructed by standard methods using commercially available reagentssuch as those from Invitrogen, San Diego, Calif. The cDNA was primedwith oligo dT containing a NotI site, linked with blunt to SalIhemikinased adaptors, cleaved with NotI, sized appropriately by gelelectrophoresis, and cloned in a defined orientation into a suitablecloning vector (such as pRKB or PRKD; pRK5B is a precursor of pRK5D thatdoes not contain the SfiI site; see, Holmes et al., Science,253:1278-1280 (1991)) in the unique XhoI and NotI sites.

Example 2 Isolation of cDNA clones by Amylase Screening 1. Preparationof Oligo dT Primed cDNA Library

[3372] mRNA was isolated from a human tissue of interest using reagentsand protocols from Invitrogen, San Diego, Calif. (Fast Track 2). ThisRNA was used to generate an oligo dT primed cDNA library in the vectorpRK5D using reagents and protocols from Life Technologies, Gaithersburg,Md. (Super Script Plasmid System). In this procedure, the doublestranded cDNA was sized to greater than 1000 bp and the SalI/NotITinkered cDNA was cloned into XhoI/NotI cleaved vector. pRK5D is acloning vector that has an sp6 transcription initiation site followed byan SfiI restriction enzyme site preceding the XhoI/NotI cDNA cloningsites.

2. Preparation of Random Primed cDNA Library

[3373] A secondary cDNA library was generated in order to preferentiallyrepresent the 5′ ends of the primary cDNA clones. Sp6 RNA was generatedfrom the primary library (described above), and this RNA was used togenerate a random primed cDNA library in the vector pSST-AMY.0 usingreagents and protocols from Life Technologies (Super Script PlasmidSystem, referenced above). In this procedure the double stranded cDNAwas sized to 500-1000 bp, Tinkered with blunt to NotI adaptors, cleavedwith SfiI, and cloned into SfiI/NotI cleaved vector. pSST-AMY.0 is acloning vector that has a yeast alcohol dehydrogenase promoter precedingthe cDNA cloning sites and the mouse amylase sequence (the maturesequence without the secretion signal) followed by the yeast alcoholdehydrogenase terminator, after the cloning sites. Thus, cDNAs clonedinto this vector that are fused in frame with amylase sequence will leadto the secretion of amylase from appropriately transfected yeastcolonies.

3. Transformation and Detection

[3374] DNA from the library described in paragraph 2 above was chilledon ice to which was added electrocompetent DH10B bacteria (LifeTechnologies, 20 ml). The bacteria and vector mixture was thenelectroporated as recommended by the manufacturer. Subsequently, SOCmedia (Life Technologies, 1 ml) was added and the mixture was incubatedat 37° C. for 30 minutes. The transformants were then plated onto 20standard 150 mm LB plates containing ampicillin and incubated for 16hours (37° C.). Positive colonies were scraped off the plates and theDNA was isolated from the bacterial pellet using standard protocols,e.g. CsCl-gradient. The purified DNA was then carried on to the yeastprotocols below.

[3375] The yeast methods were divided into three categories: (1)Transformation of yeast with the plasmid/cDNA combined vector; (2)Detection and isolation of yeast clones secreting amylase; and (3) PCRamplification of the insert directly from the yeast colony andpurification of the DNA for sequencing and further analysis.

[3376] The yeast strain used was HD56-5A (ATCC-90785). This strain hasthe following genotype: MAT alpha, ura3-52, leu2-3, leu2-112, his3-11,his3-15, MAL⁺, SUC⁺, GAL⁺. Preferably, yeast mutants can be employedthat have deficient post-translational pathways. Such mutants may havetranslocation deficient alleles in sec7l, sec72, sec62, with truncatedsec7l being most preferred. Alternatively, antagonists (includingantisense nucleotides and/or ligands) which interfere with the normaloperation of these genes, other proteins implicated in this posttranslation pathway (e.g., SEC61p, SEC72p, SEC62p, SEC63p, TDJ1p orSSA1p4p) or the complex formation of these proteins may also bepreferably employed in combination with the amylase-expressing yeast.

[3377] Transformation was performed based on the protocol outlined byGietz et al., Nucl. Acid. Res., 20:1425 (1992). Transformed cells werethen inoculated from agar into YEPD complex media broth (100 ml) andgrown overnight at 30° C. The YEPD broth was prepared as described inKaiser et al., Methods in Yeast Genetics, Cold Spring Harbor Press, ColdSpring Harbor, N.Y., p. 207 (1994). The overnight culture was thendiluted to about 2×10⁶ cells/ml (approx. OD₆₀₀=0.1) into fresh YEPDbroth (500 ml) and regrown to 1×10⁷ cells/ml (approx. OD₆₀₀=0.4−0.5).

[3378] The cells were then harvested and prepared for transformation bytransfer into GS3 rotor bottles in a Sorval GS3 rotor at 5,000 rpm for 5minutes, the supernatant discarded, and then resuspended into sterilewater, and centrifuged again in 50 ml falcon tubes at 3,500 rpm in aBeckman GS-6KR centrifuge. The supernatant was discarded and the cellswere subsequently washed with LiAc/TE (10 ml, 10 mM Tris-HCl, 1 mM EDTApH 7.5, 100 mM Li₂OOCCH₃), and resuspended into LiAc/TE (2.5 ml).

[3379] Transformation took place by mixing the prepared cells (100 μl)with freshly denatured single stranded salmon testes DNA (LofstrandLabs, Gaithersburg, Md.) and transforming DNA (1 μg, vol.<10 μl) inmicrofuge tubes. The mixture was mixed briefly by vortexing, then 40%PEG/TE (600 μl, 40% polyethylene glycol-4000, 10 mM Tris-HCl, 1 mM EDTA,100 mM Li₂OOCCH₃, pH 7.5) was added. This mixture was gently mixed andincubated at 30° C. while agitating for 30 minutes. The cells were thenheat shocked at 42° C. for 15 minutes, and the reaction vesselcentrifuged in a microfuge at 12,000 rpm for 5-10 seconds, decanted andresuspended into TE (500 μl, 10 mM Tris-HCl, 1 mM EDTA pH 7.5) followedby recentrifugation. The cells were then diluted into TE (1 ml) andaliquots (200 μl) were spread onto the selective media previouslyprepared in 150 mm growth plates (VWR).

[3380] Alternatively, instead of multiple small reactions, thetransformation was performed using a single, large scale reaction,wherein reagent amounts were scaled up accordingly.

[3381] The selective media used was a synthetic complete dextrose agarlacking uracil (SCD-Ura) prepared as described in Kaiser et al., Methodsin Yeast Genetics, Cold Spring Harbor Press, Cold Spring Harbor, N.Y.,p. 208-210 (1994). Transformants were grown at 30° C. for 2-3 days.

[3382] The detection of colonies secreting amylase was performed byincluding red starch in the selective growth media. Starch was coupledto the red dye (Reactive Red-120, Sigma) as per the procedure describedby Biely et al., Anal. Biochem., 172:176-179 (1988). The coupled starchwas incorporated into the SCD-Ura agar plates at a final concentrationof 0.15% (w/v), and was buffered with potassium phosphate to a pH of 7.0(50-100 mM final concentration).

[3383] The positive colonies were picked and streaked across freshselective media (onto 150 mm plates) in order to obtain well isolatedand identifiable single colonies. Well isolated single colonies positivefor amylase secretion were detected by direct incorporation of redstarch into buffered SCD-Ura agar. Positive colonies were determined bytheir ability to break down starch resulting in a clear halo around thepositive colony visualized directly.

4. Isolation of DNA by PCR Amplification

[3384] When a positive colony was isolated, a portion of it was pickedby a toothpick and diluted into sterile water (30 μl) in a 96 wellplate. At this time, the positive colonies were either frozen and storedfor subsequent analysis or immediately amplified. An aliquot of cells (5μl) was used as a template for the PCR reaction in a 25 μl volumecontaining: 0.5 μl Klentaq (Clontech, Palo Alto, Calif.); 4.0 μl 10 mMdNTP's (Perkin Elmer-Cetus); 2.5 μl Kentaq buffer (Clontech); 0.25 μlforward oligo 1; 0.25 μl reverse oligo 2; 12.5,μl distilled water. Thesequence of the forward oligonucleotide 1 was:

[3385] 5′-TGTAAAACGACGGCCAGTTAAATAGACCTGCAATTATTAATCT-3′ (SEQ ID NO: 1)

[3386] The sequence of reverse oligonucleotide 2 was:

[3387] 5′-CAGGAAACAGCTATGACCACCTGCACACCTGCAAATCCATT-3′ (SEQ ID NO: 2)

[3388] PCR was then performed as follows: a. Denature 92° C., 5 minutesb. 3 cycles of: Denature 92° C., 30 seconds Anneal 59° C., 30 secondsExtend 72° C., 60 seconds c. 3 cycles of: Denature 92° C., 30 secondsAnneal 57° C., 30 seconds Extend 72° C., 60 seconds d. 25 cycles of:Denature 92° C., 30 seconds Anneal 55° C., 30 seconds Extend 72° C., 60seconds e. Hold 4° C.

[3389] The underlined regions of the oligonucleotides annealed to theADH promoter region and the amylase region, respectively, and amplifieda 307 bp region from vector pSST-AMY.0 when no insert was present.Typically, the first 18 nucleotides of the 5′ end of theseoligonucleotides contained annealing sites for the sequencing primers.Thus, the total product of the PCR reaction from an empty vector was 343bp. However, signal sequence-fused cDNA resulted in considerably longernucleotide sequences.

[3390] Following the PCR, an aliquot of the reaction (5 μl) was examinedby agarose gel electrophoresis in a 1% agarose gel using aTris-Borate-EDTA (TBE) buffering system as described by Sambrook et al.,supra. Clones resulting in a single strong PCR product larger than 400bp were further analyzed by DNA sequencing after purification with a 96Qiaquick PCR clean-up column (Qiagen Inc., Chatsworth, Calif.).

Example 3 Isolation of cDNA Clones Using Signal Algorithm Analysis

[3391] Various polypeptide-encoding nucleic acid sequences wereidentified by applying a proprietary signal sequence finding algorithmdeveloped by Genentech, Inc. (South San Francisco, Calif.) upon ESTs aswell as clustered and assembled EST fragments from public (e.g.,GenBank) and/or private (LIFESEQ®, Incyte Pharmaceuticals, Inc., PaloAlto, Calif.) databases. The signal sequence algorithm computes asecretion signal score based on the character of the DNA nucleotidessurrounding the first and optionally the second methionine codon(s)(ATG) at the 5′-end of the sequence or sequence fragment underconsideration. The nucleotides following the first ATG must code for atleast 35 unambiguous amino acids without any stop codons. If the firstATG has the required amino acids, the second is not examined. If neithermeets the requirement, the candidate sequence is not scored. In order todetermine whether the EST sequence contains an authentic signalsequence, the DNA and corresponding amino acid sequences surrounding theATG codon are scored using a set of seven sensors (evaluationparameters) known to be associated with secretion signals. Use of thisalgorithm resulted in the identification of numerouspolypeptide-encoding nucleic acid sequences.

Example 4 Isolation of cDNA Clones Encoding Human PRO1560

[3392] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein as DNA17409. Based on the DNA17409consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1560.

[3393] DNA sequencing of the isolated clones isolated as described abovegave the full-length DNA sequence for DNA19902-1669 [FIG. 1, SEQ ID NO:3]; and the derived protein sequence for PRO1560.

[3394] The entire coding sequence of DNA19902-1669 is included in FIG. 1(SEQ ID NO: 3). Clone DNA19902-1669 contains a single open reading framewith an apparent translational initiation site at nucleotide positions41-43, and an apparent stop codon at nucleotide positions 776-778. Thepredicted polypeptide precursor is 245 amino acids long. The approximatelocations of the signal peptide, transmembrane domains, N-glycosylationsites, N-myristoylation sites, tyrosine kinase phosphorylation sites,and membrane lipoprotein lipid attachment sites are also indicated inFIG. 2. Clone DNA19902-1669 has been deposited with the ATCC and isassigned ATCC deposit no. 203454. The full-length PRO1560 protein shownin FIG. 2 has an estimated molecular weight of about 27,563 daltons anda pI of about 8.36.

[3395] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 2 (SEQ ID NO: 4), revealed sequence identitybetween the PRO1560 amino acid sequence and the following Dayhoffsequences: AF053453_(—)1, AF053454_(—)1, A15_HUMAN, AF054840_(—)1,CD63_HUMAN, AF065389_(—)1, AF054838_(—)1, AF089749_(—)1, P_R27525, andP_R86834.

Example 5 Isolation of cDNA Clones Encoding Human PRO444

[3396] A cDNA sequence isolated in the amylase screen described inExample 2 above was designated DNA13121. Based upon this sequence,probes were generated and used to screen a human fetal lung library(LIB25) prepared as described in paragraph 1 of Example 2 above. Thecloning vector was pRK5B (pRK5B is a precursor of pRK5D that does notcontain the SfiI site; see, Holmes et al., Science, 253:1278-1280(1991)), and the cDNA size cut was less than 2800 bp.

[3397] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 608-610 and ending at the stop codon found atnucleotide positions 959-961 (FIG. 3, SEQ ID NO: 5). The predictedpolypeptide precursor is 117 amino acids long, has a calculatedmolecular weight of approximately 12,692 daltons and an estimated pI ofapproximately 7.50. Analysis of the full-length PRO444 sequence shown inFIG. 4 (SEQ ID NO: 6) evidences the presence of a signal peptide atamino acid 1 to about amino acid 16. An analysis of the Dayhoff database(version 35.45 SwissProt 35) evidenced homology between the PRO444 aminoacid sequence and the following Dayhoff sequences: CEF44D12_(—)8,P_R88452, YNE1_CAEEL, A47312, AF009957_(—)1, and A06133_(—)1. CloneDNA26846-1397 was deposited with the ATCC on Oct. 27, 1998 and isassigned ATCC deposit no. 203406.

Example 6 Isolation of cDNA Clones Encoding Human PRO1018

[3398] A cDNA clone (DNA56107-1415) encoding a native human PRO1018polypeptide was identified by a yeast screen, in a human ovary tumorcDNA library that preferentially represents the 5′ ends of the primarycDNA clones. The yeast screen employed identified a single EST clonedesignated herein as DNA41000. The DNA41000 sequence was then comparedto various EST databases including public EST databases (e.g., GenBank),and a proprietary EST database (LIFESEQ®, Incyte Pharmaceuticals, PaloAlto, Calif.) to identify homologous EST sequences. The comparison wasperformed using the computer program BLAST or BLAST2 [Altschul et al.,Methods in Enzymology, 266:460-480 (1996)]. Those comparisons resultingin a BLAST score of 70 (or in some cases, 90) or greater that did notencode known proteins were clustered and assembled into a consensus DNAsequence with the program “phrap” (Phil Green, University of Washington,Seattle, Wash.). This consensus sequence is herein designated DNA44449.Oligonucleotide primers based upon the DNA44449 sequence were thensynthesized and employed to screen a human ovary tumor cDNA librarywhich resulted in the identification of the DNA56107-1415 clone shown inFIG. 5.

[3399] The full-length DNA56107-1415 clone shown in FIG. 5 contains asingle open reading frame with an apparent translational initiation siteat nucleotide positions 129-131 and ending at the stop codon atnucleotide positions 696-698 (FIG. 5). The predicted polypeptideprecursor is 189 amino acids long (FIG. 6). Analysis of the full-lengthPRO1018 sequence shown in FIG. 6 (SEQ ID NO: 8) evidences the presenceof the following: a signal peptide from about amino acid 1 to aboutamino acid 24, transmembrane domains from about amino acid 86 to aboutamino acid 103 and from about amino acid 60 to about amino acid 75 andan amino acid sequence block having homology to G-protein coupledreceptor proteins from about amino acid 44 to about amino acid 84. CloneDNA56107-1415 has been deposited with ATCC on Oct. 27, 1998 and isassigned ATCC deposit no. 203405.

[3400] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 6 (SEQ ID NO: 8), evidenced significant homologybetween the PRO1018 amino acid sequence and the following Dayhoffsequences: CEB0399_(—)4, S59764, YHDT_HAEIN and AE000675_(—)3.

Example 7 Isolation of cDNA Clones Encoding Human PRO1773

[3401] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA49797. Based upon an observed homologybetween the DNA49797 consensus sequence and an EST sequence containedwithin Incyte EST clone no. 509434, Incyte EST clone no. 509434 waspurchased and its insert obtained and sequenced. That sequence is hereinshown in FIG. 7 and is designated DNA56406-1704.

[3402] The entire nucleotide sequence of DNA56406-1704 is shown in FIG.7 (SEQ ID NO: 9). Clone DNA56406-1704 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 111-113 and ending at the stop codon at nucleotide positions1068-1070 (FIG. 7). The predicted polypeptide precursor is 319 aminoacids long (FIG. 8). The full-length PRO1773 protein shown in FIG. 8 hasan estimated molecular weight of about 35,227 daltons and a pI of about8.97. Analysis of the full-length PRO1773 sequence shown in FIG. 8 (SEQID NO: 10) evidences the presence of the following: a signal peptidefrom about amino acid 1 to about amino acid 17, a transmembrane domainfrom about amino acid 136 to about amino acid 152, potentialN-glycosylation sites from about amino acid 161 to about amino acid 164,from about amino acid 187 to about amino acid 190 and from about aminoacid 253 to about amino acid 256, a glycosaminoglycan attachment sitefrom about amino acid 39 to about amino acid 42 and potentialN-myristolation sites from about amino acid 36 to about amino acid 41,from about amino acid 42 to about amino acid 47, from about amino acid108 to about amino acid 113, from about amino acid 166 to about aminoacid 171, from about amino acid 198 to about amino acid 203 and fromabout amino acid 207 to about amino acid 212. Clone DNA56406-1704 hasbeen deposited with ATCC on Nov. 17, 1998 and is assigned ATCC depositno. 203478.

[3403] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 8 (SEQ ID NO: 10), evidenced significant homologybetween the PRO1773 amino acid sequence and the following Dayhoffsequences: ROH2_RAT, ROH3_RAT, AF030513_(—)1, ROH1_RAT, AF056194_(—)1,AF057034_(—)1, P_W18337, P_W18328, BDH_HUMAN and BDH_RAT.

Example 8 Isolation of cDNA Clones Encoding Human PRO1477

[3404] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA52641. Based on the DNA52641 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence for PRO240.

[3405] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′-CGCCAGAAGGGCGTGATTGACGTC-3′ (SEQ ID NO:13) reverse PCR primer5′-CCATCCTTCTTCCCAGACAGGCCG-3′ (SEQ ID NO:14)

[3406] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA52641 sequence which had the followingnucleotide sequence hybridization probe5′-GAAGCCTGTGTCCAGGTCCTTCAGTGAGTGGTTTGGCCTCGGTC-3′ (SEQ ID NO:15)

[3407] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO240 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal livertissue.

[3408] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1477 (designated herein as DNA56529-1647[FIG. 9, SEQ ID NO: 11]; and the derived protein sequence for PRO1477.

[3409] The entire nucleotide sequence of DNA56529-1647 is shown in FIG.9 (SEQ ID NO: 11). Clone DNA56529-1647 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 23-25 and ending at the stop codon at nucleotide positions2120-2122 (FIG. 9). The predicted polypeptide precursor is 699 aminoacids long (FIG. 10). The full-length PRO240 protein shown in FIG. 10has an estimated molecular weight of about 79,553 daltons and a pI ofabout 7.83. Analysis of the full-length PRO1477 sequence shown in FIG.10 (SEQ ID NO: 12) evidences the presence of the following:transmembrane domains from about amino acid 21 to about amino acid 40and from about amino acid 84 to about amino acid 105. CloneDNA56529-1647 has been deposited with ATCC on Sep. 29, 1998 and isassigned ATCC deposit no. 203293.

[3410] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 10 (SEQ ID NO: 12), evidenced significanthomology between the PRO1477 amino acid sequence and the followingDayhoff sequences: CELT03G11_(—)1, CEZC410_(—)4, A54408, SSMAN9MAN_(—)1,GEN12643, GEN12642, AF027156_(—)1, P_W46900, SPAC23A1_(—)4 andDMC86E4_(—)5.

Example 9 Isolation of cDNA Clones Encoding Human PRO1478

[3411] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA52719”. Based on the DNA52719consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1478.

[3412] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′GCGAACGCTTCGAGGAGTCCTGG3′ (SEQ ID NO:18); and reverse PCRprimer 5′GCAGTGCGGGAAGCCACATGGTAC3′ (SEQ ID NO:19).

[3413] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensusDNA52719 sequence which had the followingnucleotide sequence: hybridization probe5′CTTCCTGAGCAGGAAGAAGATCCGGCACCACATCTACGTGCTCAAC3′ (SEQ ID NO:20)

[3414] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1478 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal kidneytissue.

[3415] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1478 and the derived protein sequencefor PRO1478.

[3416] The entire coding sequence of PRO1478 is included in FIG. 11 (SEQID NO: 16). Clone DNA56531-1648 contains a single open reading framewith an apparent translational initiation site at nucleotide positions77-79 and an apparent stop codon at nucleotide positions 1058-1060 ofSEQ ID NO: 16. The predicted polypeptide precursor is 327 amino acidslong. The type II transmembrane sequence is believed to be at aboutamino acids 2949 of SEQ ID NO: 17, and an N-glycosylation site isbelieved to be at about amino acids 154-157 of SEQ ID NO: 17. CloneDNA56531-1648 has been deposited with ATCC and is assigned ATCC depositno. 203286. The full-length PRO1478 protein shown in FIG. 12 has anestimated molecular weight of about 37,406 daltons and a pI of about9.3.

[3417] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 12 (SEQ ID NO: 17), revealed sequence identitybetween the PRO1478 amino acid sequence and the following Dayhoffsequences: YNJ4_CAEEL, P_R55706, A38781_(—)1, NALS_MOUSE, HUMHGT_(—)1,AF048687_(—)1, CEW02B12_(—)11, Y09F_MYCTU, FOJO_DROME, and G01936.

Example 10 Isolation of cDNA Clones Encoding Human PRO831

[3418] DNA56862-1343 was identified by applying the proprietary signalsequence finding algorithm described in Example 3 above. Use of theabove described signal sequence algorithm allowed identification of anEST cluster sequence from the Incyte database, designated Incyte clustersequence no. 25507. This EST cluster sequence was then compared to avariety of expressed sequence tag (EST) databases which included publicEST databases (e.g., GenBank) and a proprietary EST DNA database(Lifeseq®, Incyte Pharmaceuticals, Palo Alto, Calif.) to identifyexisting homologies. The homology search was performed using thecomputer program BLAST or BLAST2 (Altshul et al., Methods in Enzymology266:460-480 (1996)). Those comparisons resulting in a BLAST score of 70(or in some cases 90) or greater that did not encode known proteins wereclustered and assembled into a consensus DNA sequence with the program“phrap” (Phil Green, University of Washington). The consensus sequenceobtained therefrom is herein designated as DNA55714.

[3419] In light of the sequence homology between the DNA55714 sequenceand an EST sequence contained within the Merck EST clone no. AA099445,the Merck EST clone no. AA099445 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 13 and is herein designated as DNA56862-1343.

[3420] Clone DNA56862-1343 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 40-42 andending at the stop codon at nucleotide positions 259-261 (FIG. 13). Thepredicted polypeptide precursor is 73 amino acids long (FIG. 14). Thefull-length PRO831 protein shown in FIG. 14 has an estimated molecularweight of about 7,879 daltons and a pI of about 7.21. Analysis of thefull-length PRO831 sequence shown in FIG. 14 (SEQ ID NO: 22) evidencesthe presence of the following: a signal peptide from about amino acid 1to about amino acid 15 and an amino acid sequence block having homologyto growth factor and cytokine receptor family proteins from about aminoacid 3 to about amino acid 18. Clone DNA56862-1343 has been depositedwith ATCC on Sep. 1, 1998 and is assigned ATCC deposit no. 203174.

[3421] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 14 (SEQ ID NO: 22), evidenced significanthomology between the PRO831 amino acid sequence and the followingDayhoff sequences: P_W30724, HUMPPA_(—)1, AF022238_(—)1, 4HHB_C,P_R39727, P_R39728, TRYT_MERUN, GPR5_HUMAN, AB010266_(—)3 andHSBCL3S2_(—)1.

Example 11 Isolation of cDNA Clones Encoding Human PRO1113

[3422] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA34025”. Based on the DNA34025consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1113.

[3423] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′GAGGACTCACCAATCTGGTTCGGC3′ (SEQ ID NO:25); and reverse PCRprimer 5′AACTGGAAAGGAAGGCTGTCTCCC3′ (SEQ ID NO:26).

[3424] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA34025 sequence which had the followingnucleotide sequence: hybridization probe5′GTAAAGGAGAAGAACATCACGGTACGGGATACCAGGTGTGTTTATCCTAA3′ (SEQ ID NO:27).

[3425] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1113 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal kidney.

[3426] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1113 (designated herein as DNA57254-1477[FIG. 15, SEQ ID NO: 23]; and the derived protein sequence for PRO1113.

[3427] The entire coding sequence of PRO1113 is shown in FIG. 15 (SEQ IDNO: 23). Clone DNA57254-1477 contains a single open reading frame withan apparent translational initiation site at nucleotide positions214-216, and an apparent stop codon at nucleotide positions 2062-2064 ofSEQ ID NO: 23. The predicted polypeptide precursor is 616 amino acidslong. The transmembrane domain (type II) is believed to be at aboutamino acids 1340 of SEQ ID NO: 24. The N-glycosylation sites andN-myristoylation sites are indicated in FIG. 16. Clone DNA57254-1477 hasbeen deposited with the ATCC and is assigned ATCC deposit no. 203289.The full-length PRO1113 protein shown in FIG. 16 has an estimatedmolecular weight of about 68,243 daltons and a pI of about 8.66.

[3428] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 16 (SEQ ID NO: 24), revealed sequence identitybetween the PRO1113 amino acid sequence and the following Dayhoffsequences (data incorporated herein): D86983_(—)1, A58532, SLIT_DROME,AB007865_(—)1, AC004142_(—)1, CELT21D12_(—)8, AB003184_(—)1,DMU42767_(—)1, MUSLRRP_(—)1 and GPCR_LYMST.

Example 12 Isolation of cDNA Clones Encoding Human PRO1194

[3429] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a human pinealgland library. The homology search was performed using the computerprogram BLAST or BLAST2 (Altshul et al., Methods in Enzymology266:460-480 (1996)). Those comparisons resulting in a BLAST score of 70(or in some cases 90) or greater that did not encode known proteins wereclustered and assembled into a consensus DNA sequence with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.). Theconsensus sequence obtained therefrom is herein designated DNA56511.

[3430] In light of the sequence homology between the DNA56511 sequenceand an EST contained within the Merck EST AA069568, the clone 382736which includes this EST was purchased and the cDNA insert was obtainedand sequenced. The sequence of this cDNA insert is shown in FIG. 17 andis herein designated as DNA57841-1522.

[3431] The full length clone shown in FIG. 17 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 9-11 and ending at the stop codon found atnucleotide positions 252-254 (FIG. 17; SEQ ID NO: 28). The predictedpolypeptide precursor (FIG. 18, SEQ ID NO: 29) is 81 amino acids long.The signal peptide is at about amino acids 1-21 of SEQ ID NO: 29.PRO1194 has a calculated molecular weight of approximately 9,223 daltonsand an estimated pI of approximately 10.47. Clone DNA57841-1522 wasdeposited with the ATCC on Nov. 3, 1998 and is assigned ATCC deposit no.203458.

[3432] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 18 (SEQ ID NO: 29), revealed sequence identitybetween the PRO1194 amino acid sequence and the following Dayhoffsequences: PT17_YEAST, RR2_CHLVU, CEK12F2_(—)1, S22452, S76705,AF031898_(—)7, A4_DROME, AF038931_(—)1, E49905, and GSPL_AERHY.

Example 13 Isolation of cDNA Clones Encoding Human PRO1110

[3433] A cDNA clone (DNA58727-1474) encoding a native human PRO1110polypeptide was identified by a yeast screen, in a human fetal kidneycDNA library that preferentially represents the 5′ ends of the primarycDNA clones. The yeast screen employed identified a single EST clonedesignated herein as DNA45566. The DNA45566 sequence was then comparedto various EST databases including public EST databases (e.g., GenBank),and a proprietary EST database (LIFESEQ®, Incyte Pharmaceuticals, PaloAlto, Calif.) to identify homologous EST sequences. The comparison wasperformed using the computer program BLAST or BLAST2 [Altschul et al.,Methods in Enzymology, 266:460-480 (1996)]. Those comparisons resultingin a BLAST score of 70 (or in some cases, 90) or greater that did notencode known proteins were clustered and assembled into a consensus DNAsequence with the program “phrap” (Phil Green, University of Washington,Seattle, Wash.). This consensus sequence is herein designated DNA46965.Oligonucleotide primers based upon the DNA46965 sequence were thensynthesized and employed to screen a human SK-Lu-1 adenocarcinoma cDNAlibrary (LIB247) which resulted in the identification of theDNA58727-1474 clone shown in FIG. 19.

[3434] The full-length DNA58727-1474 clone shown in FIG. 19 contains asingle open reading frame with an apparent translational initiation siteat nucleotide positions 131-133 and ending at the stop codon atnucleotide positions 1097-1099 (FIG. 19). The predicted polypeptideprecursor is 322 amino acids long (FIG. 20). The full-length PRO1110protein shown in FIG. 20 has an estimated molecular weight of about35,274 daltons and a pI of about 8.57. Analysis of the full-lengthPRO1110 sequence shown in FIG. 20 (SEQ ID NO: 31) evidences the presenceof the following: transmembrane domains from about amino acid 41 toabout amino acid 60, from about amino acid 66 to about amino acid 85,from about amino acid 101 to about amino acid 120, from about amino acid137 to about amino acid 153, from about amino acid 171 to about aminoacid 192, from about amino acid 205 to about amino acid 226, from aboutamino acid 235 to about amino acid 255 and from about amino acid 294 toabout amino acid 312, a potential N-glycosylation site from about aminoacid 6 to about amino acid 69, and a glycosaminoglycan attachment sitefrom about amino acid 18 to about amino acid 21. Clone DNA58727-1474 hasbeen deposited with ATCC on Sep. 1, 1998 and is assigned ATCC depositno. 203171.

[3435] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 20 (SEQ ID NO: 31), evidenced significanthomology between the PRO1110 amino acid sequence and the followingDayhoff sequences: MMMYELUPR_(—)1, P_R99799, MAL_HUMAN, P_P80929,RNMALGENE_(—)1, S68406, PLLP_RAT, MMMALPROT_(—)1, I38891 and S55622.

Example 14 Isolation of cDNA Clones Encoding Human PRO1378

[3436] An initial DNA sequence referred to herein as DNA51941 wasidentified using a yeast screen, in a human bone marrow cDNA librarythat preferentially represents the 5′ ends of the primary cDNA clones.Based on the DNA51941 sequence, the following oligonucleotides weresynthesized for use as probes to isolate a clone of the full-lengthcoding sequence for PRO1377 from a bone marrow cDNA library:TGTCCTTTGTCCCAGACTTCTGTCC (SEQ ID NO:34),CTGGATGCTAATGTGTCCAGTAAATGATCCCCTTATCCCGTCGCGATGCT (SEQ ID NO:35);TTCCACTCAATGAGGTGAGCCACTC (SEQ ID NO:36); GGCGAGCCCTAACTATCCAGGAG (SEQID NO:37); GGAGATCGCTGCGCTGGCCAGGTCCTCCCTGCATGGTAT (SEQ ID NO:38); andCTGCTGCAAAGCGAGCCTCTTG (SEQ ID NO:39).

[3437] The full length DNA58730-1607 clone shown in FIG. 21 contained asingle open reading frame with an apparent translational initiation siteat nucleotide positions 1365 to 1367 and ending at the stop codon foundat nucleotide positions 2370 to 2372 (FIG. 21; SEQ ID NO: 32). Thepredicted polypeptide precursor (FIG. 22, SEQ ID NO: 33) is 335 aminoacids long, with a signal peptide sequence at about amino acids 1-15.PRO1378 has a calculated molecular weight of approximately 36,108daltons and an estimated pI of approximately 4.51.

[3438] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 22 (SEQ ID NO: 33), revealed some homologybetween the PRO1378 amino acid sequence and the following Dayhoffsequences: ICAL_RABIT, SP2_HUMAN, SHPSPRBB_(—)1, SP23_HUMAN, P_W08158,and P_W08150.

[3439] Clone DNA58730-1607 was deposited with the ATCC on Sep. 15, 1998,and is assigned ATCC deposit no. 203221.

Example 15 Isolation of cDNA Clones Encoding Human PRO1481

[3440] An initial DNA sequence, referred to herein as DNA53254, wasidentified using a yeast screen, in a human fetal kidney cDNA librarythat preferentially represents the 5′ ends of the primary cDNA clones.Based on the DNA53254 sequence, oligonucleotides were synthesized foruse as probes (or primers) to isolate a clone of the full-length codingsequence for PRO1481 from a human fetal kidney cDNA library.

[3441] The full length DNA58732-1650 clone shown in FIG. 23 contained asingle open reading frame with an apparent translational initiation siteat nucleotide positions 320-322 and ending at the stop codon found atnucleotide positions 1322-1324 (FIG. 23; SEQ ID NO: 40). The predictedpolypeptide precursor (FIG. 24, SEQ ID NO: 41) is 334 amino acids long.The signal peptide is at about amino acids 1-23, and a transmembranedomain is at about amino acids 235-262 of SEQ ID NO: 41. TheN-glycosylation sites are indicated in FIG. 24. PRO1481 has a calculatedmolecular weight of approximately 36,294 daltons and an estimated pI ofapproximately 4.98. Clone DNA58732-1650 has been deposited with the ATCCand is assigned ATCC deposit no. 203290.

[3442] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 24 (SEQ ID NO: 41), revealed sequence identitybetween the PRO1481 amino acid sequence and the following Dayhoffsequences (data incorporated herein): YN23_YEAST, S67770, H36857,YLU2_PICAN, GEN12881, CVY15035_(—)28, YM96_YEAST, ESC1_SCHPO,CELZK783_(—)1 and S59310.

Example 16 Isolation of cDNA Clones Encoding Human PRO1189

[3443] A cDNA sequence isolated in the amylase screen described inExample 2 above is herein designated DNA41784. The DNA41784 sequence wasthen compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and proprietary ESTDNA databases (LIFESEQTM, Incyte Pharmaceuticals, Palo Alto, Calif.; andGenentech, South San Francisco, Calif.) to identify existing homologies.The homology search was performed using the computer program BLAST orBLAST2 (Altshul et al., Methods in Enzymology 266:460-480 (1996)). Thosecomparisons resulting in a BLAST score of 70 (or in some cases 90) orgreater that did not encode known proteins were clustered and assembledinto consensus DNA sequences with the program “phrap” (Phil Green,University of Washington, Seattle, Wash.). The consensus sequenceobtained therefrom is herein designated DNA45499.

[3444] Based on the DNA45499 sequence, oligonucleotide probes weregenerated and used to screen a human bone marrow library prepared asdescribed in paragraph 1 of Example 2 above. The cloning vector waspRK5B (pRK5B is a precursor of pRK5D that does not contain the SfiIsite; see, Holmes et al., Science, 253:1278-1280 (1991)), and the cDNAsize cut was less than 2800 bp.

[3445] PCR primers (forward and reverse) were synthesized: forward PCRprimer (45499.f1) 5′-GAAAGACACGACACAGCAGCTTGC-3′ (SEQ ID NO:44) forwardPCR primer (45499.f2) 5′-GGGAACTGCTATCTGATGCC-3′ (SEQ ID NO:45) forwardPCR primer (45499.f3) 5′-CAGGATCTCCTCTTGCAGTCTGCAGC-3′ (SEQ ID NO:46)reverse PCR primer (45499.r1) 5′-CTTCTCGAACCACATAAGTTTGAGGCAG-3′ (SEQ IDNO:47) reverse PCR primer (45499.r2) 5′-CACGATTCCCTCCACAGCAACTGGG-3′(SEQ ID NO:48).

[3446] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA45499 sequence which had the followingnucleotide sequence: hybridization probe (45499.p1)5′-CGCCTTACCGCGCAGCCCGAAGATTCACTATGGTGAAAATCGCCTTCAAT-3′ (SEQ ID NO:230)

[3447] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1189 gene usingthe probe oligonucleotide and one of the PCR primers.

[3448] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 79-81, and a stop signal at nucleotide positions868-870 (FIG. 25; SEQ ID NO: 42). The predicted polypeptide precursor is263 amino acids long has a calculated molecular weight of approximately29,741 daltons and an estimated pI of approximately 5.74. Additionalfeatures include a type II transmembrane domain at about amino acids53-75 and a potential N-glycosylation site at about amino acids 166-169.

[3449] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 26 (SEQ ID NO: 43), evidenced significanthomology between the PRO1189 amino acid sequence and Dayhoff sequencesMUSE25A_(—)1 and HS696H22_(—)1. Additionally, some homology was revealedbetween the PRO1189 amino acid sequence and the following Dayhoffsequences: AF017985_(—)1, CBRG01D9_(—)2, I79662, and CHPDRBAG_(—)1.

[3450] Clone DNA58828-1519 has been deposited with ATCC and is assignedATCC deposit no. 203172.

Example 17 Isolation of cDNA Clones Encoding Human PRO1415

[3451] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 150918. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA55720.

[3452] In light of the sequence homology between the DNA55720 sequenceand an EST sequence contained within the Incyte EST clone no. 4081476,the Incyte EST clone no. 4081476 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 27 and is herein designated as DNA58852-1637.

[3453] Clone DNA58852-1637 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 148-150and ending at the stop codon at nucleotide positions 997-999 (FIG. 27).The predicted polypeptide precursor is 283 amino acids long (FIG. 28).The full-length PRO1415 protein shown in FIG. 28 has an estimatedmolecular weight of about 29,191 daltons and a pI of about 4.52.Analysis of the full-length PRO1415 sequence shown in FIG. 28 (SEQ IDNO: 50) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 25, a transmembrane domain fromabout amino acid 94 to about amino acid 118 and potentialN-myristolation sites from about amino acid 18 to about amino acid 23,from about amino acid 40 to about amino acid 45, from about amino acid46 to about amino ac 51, from about amino acid 145 to about amino acid150, from about amino acid 192 to about amino acid 197, from about aminoacid 193 to about amino acid 198, from about amino acid 211 to aboutamino acid 216, from about amino acid 238 to about amino acid 243 andfrom about amino acid 24 2 to about amino acid 24 7. Clone DNA58852-1637has been deposited with ATCC on Sep. 22, 1998 and is assigned ATCCdeposit no. 203271.

[3454] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 28 (SEQ ID NO: 50), evidenced significanthomology between the PRO1415 amino acid sequence and the followingDayhoff sequences: HSU66616_(—)1, P_W24017, A38219, CD30_HUMAN,HSU78971_(—)1, P_W22214, NFM_HUMAN, ADH1_ASPFL, PAU93274_(—)5 andCENB_MOUSE.

Example 18 Isolation of cDNA Clones Encoding Human PRO1411

[3455] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from an Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs were derived from a thryroid tissuelibrary. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated DNA56013.

[3456] In light of the sequence homology between the DNA56013 sequenceand an EST sequence contained within the Incyte EST 1444225, the cloneincluding this EST was purchased and the cDNA insert was obtained andsequenced. The sequence of this cDNA insert is shown in FIG. 29 and isherein designated as DNA59212-1627.

[3457] The full length clone shown in FIG. 29 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 184-186 and ending at the stop codon found atnucleotide positions 1504-1506 (FIG. 29; SEQ ID NO: 51). The predictedpolypeptide precursor (FIG. 30, SEQ ID NO: 52) is 440 amino acids long.The signal peptide is at about amino acids 1-21, and the cell attachmentsite is at about amino acids 301-303 of SEQ ID NO: 52. PRO1411 has acalculated molecular weight of approximately 42,208 daltons and anestimated pI of approximately 6.36. Clone DNA59212-1627 was depositedwith the ATCC on Sep. 9, 1998 and is assigned ATCC deposit no. 203245.

[3458] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 30 (SEQ ID NO: 52), revealed sequence identitybetween the PRO1411 amino acid sequence and the following Dayhoffsequences (data from database incorporated herein): MTV023_(—)19,P_R05307, P_W26348, P_P82962, AF000949_(—)1, EBN1_EBV, P_R95107,GRP2_PHAVU, P_R81318, and S74439_(—)1.

Example 19 Isolation of cDNA Clones Encoding Human PRO1295

[3459] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a thymus tissuelibrary. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated DNA56262.

[3460] In light of the sequence homology between the DNA56262 sequenceand an EST contained within the Incyte EST 3743334, the clone includingthis EST was purchased and the cDNA insert was obtained and sequenced.The sequence of this cDNA insert is shown in FIG. 31 and is hereindesignated as DNA59218-1559.

[3461] The full length clone shown in FIG. 31 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 207-209 and ending at the stop codon found atnucleotide positions 1047-1049 (FIG. 31; SEQ ID NO: 53). The predictedpolypeptide precursor (FIG. 32, SEQ ID NO: 54) is 280 amino acids long.The signal peptide is at about amino acids 1-18 of SEQ ID NO: 54. Atargeting signal and N-glycosylation site are also indicated in FIG. 54.PRO1295 has a calculated molecular weight of approximately 30,163daltons and an estimated pI of approximately 6.87. Clone DNA59218-1559was deposited with the ATCC on Sep. 29, 1998 and is assigned ATCCdeposit no. 203287.

[3462] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 32 (SEQ ID NO: 54), revealed sequence identitybetween the PRO1295 amino acid sequence and the following Dayhoffsequences (data incorporated herein): AB011099_(—)1, ILVE_MYCTU,ATTECR_(—)2, AF010496_(—)27, P_R15346, S37191, PER_DROMS, L2MU_ADECC andP_W34238.

Example 20 Isolation of cDNA Clones Encoding Human PRO1359

[3463] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from an Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a sigmoid colontissue library. The homology search was performed using the computerprogram BLAST or BLAST2 (Altshul et al., Methods in Enzymology266:460-480 (1996)). Those comparisons resulting in a BLAST score of 70(or in some cases 90) or greater that did not encode known proteins wereclustered and assembled into a consensus DNA sequence with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.). Theconsensus sequence obtained therefrom is herein designated DNA56263.

[3464] In light of the sequence homology between the DNA56263 sequenceand the Incyte EST 1931418, the clone including this EST was purchasedand the cDNA insert was obtained and sequenced. The sequence of thiscDNA insert is shown in FIG. 33 and is herein designated asDNA59219-1613.

[3465] The full length clone shown in FIG. 33 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 184-186 and ending at the stop codon found atnucleotide positions 1081-1083 (FIG. 33; SEQ ID NO: 55). The predictedpolypeptide precursor (FIG. 34, SEQ ID NO: 56) is 299 amino acids long.The transmembrane domain is at about amino acids 9-31 of SEQ ID NO: 56.N-gylcosylation sites are at about amino acids 64-67 and 115-118 of SEQID NO: 56. PRO1359 has a calculated molecular weight of approximately34,291 daltons and an estimated pI of approximately 9.87. CloneDNA59219-1613 was deposited with the ATCC on Sep. 15, 1998 and isassigned ATCC deposit no. 203220.

[3466] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 34 (SEQ ID NO: 56), revealed sequence identitybetween the PRO1359 amino acid sequence and the following Dayhoffsequences (data incorporated herein): GEM14384, P_R78622, A23699_(—)1,P_R65244, A54898, AF059321_(—)1, RNU55938_(—)1, BTRNAST6_(—)1, P_R75199and P_R63216.

Example 21 Isolation of cDNA Clones Encoding Human PRO1190

[3467] The method described in Example 1 above allowed theidentification of a single Merck/Washington University EST sequence, ESTno. AA339802, which is designated herein as “DNA53943”. Based on theDNA53943 sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1190.

[3468] PCR primers (forward and reverse) were synthesized: forward PCRprimer: (53943.f1) GGGAAACACAGCAGTCATTGCCTGC (SEQ ID NO:59) reverse PCRprimer: (53943.r1) GCACACGTAGCCTGTCGCTGGAGC (SEQ ID NO:60)

[3469] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA53943 sequence which had the followingnucleotide sequence: hybridization probe: (53943.p1)CACCCCAAAGCCCAGGTCCGGTACAGCGTCAAACAAGAGTGG (SEQ ID NO:61)

[3470] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1190 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human bone marrow.

[3471] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1190 (designated herein as DNA59586-1520[FIG. 35, SEQ ID NO: 57]; and the derived protein sequence for PRO1190.

[3472] The entire coding sequence of PRO1190 is shown in FIG. 35 (SEQ IDNO: 57). Clone DNA59586-1520 contains a single open reading frame withan apparent translational initiation site at nucleotide positions340-342 and an apparent stop codon at nucleotide positions 3685-3687.The predicted polypeptide precursor is 1115 amino acids long. Thefull-length PRO1190 protein shown in FIG. 36 has an estimated molecularweight of about 121,188 daltons and a pI of about 7.07. Other featuresof the PRO1190 protein include: two transmembrane domains at amino acids16-30 and 854-879; a cytochrome P450 cystein heme-iron ligand signatureat amino acids 1051-1060; an N-6 adenine-specific DNA methylasessignature at amino acids 1045-1051; and potential N-glycosylation sitesat amino acids 65-68, 76-79, 98-101, 189-192, 275-278, 518-521, 726-729,and 760-763. Clone DNA59586-1520 was deposited with the ATCC on Sep. 29,1998, and is assigned ATCC deposit no. 203288.

[3473] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 36 (SEQ ID NO: 58), revealed homology between thePRO1190 amino acid sequence and the following Dayhoff sequences:AF004840_(—)1, AF004841_(—)1, AF026465_(—)1, HSU72391_(—)1, P_R13144,AXO1_HUMAN, GEN13349, I58164, D87212_(—)1, A53449, and D86983_(—)1, andKIAA0230.

Example 22 Isolation of cDNA Clones Encoding Human PRO1772

[3474] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA45120. Based on the DNA45120 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1772.

[3475] PCR primers (forward and reverse) were synthesized: forward PCRprimer (45120.f1) 5′-CCTTCACCTGCAGTACACCATGGGC-3′ (SEQ ID NO:64) reversePCR primer (45120.r1) 5′-GTCACACACAGCTCTGGCAGCTGAG-3′ (SEQ ID NO:65)

[3476] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA45120 sequence which had the followingnucleotide sequence hybridization probe (45120.p1)5′-CCAAGTTCAGACACCACATGTACACCAACGTCAGCGGATTGACAAGC-3′ (SEQ ID NO:66)

[3477] RNA for construction of the cDNA libraries was isolated fromhuman bone marrow tissue.

[3478] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1772 (designated herein as DNA59817-1703[FIG. 37, SEQ ID NO: 62]; and the derived protein sequence for PRO1772.

[3479] The entire nucleotide sequence of DNA59817-1703 is shown in FIG.37 (SEQ ID NO: 62). Clone DNA59817-1703 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 93-95 and ending at the stop codon at nucleotide positions1554-1556 (FIG. 37). The predicted polypeptide precursor is 487 aminoacids long (FIG. 38). The full-length PRO1772 protein shown in FIG. 38has an estimated molecular weight of about 53,569 daltons and a pI ofabout 7.68. Analysis of the full-length PRO1772 sequence shown in FIG.38 (SEQ ID NO: 63) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 36, a transmembranedomain from about amino acid 313 to about amino acid 331, potentialN-glycosylation sites from about amino acid 119 to about amino acid 122,from about amino acid 184 to about amino acid 187, from about amino acid243 to about amino acid 246 and from about amino acid 333 to about aminoacid 336, potential N-myristolation sites from about amino acid 41 toabout amino acid 46, from about amino acid 59 to about amino acid 64,from about amino acid 73 to about amino acid 78, from about amino acid133 to about amino acid 138, from about amino acid 182 to about aminoacid 187, from about amino acid 194 to about amino acid 199, from aboutamino acid 324 to about amino acid 329, from about amino acid 354 toabout amino acid 359, from about amino acid 357 to about amino acid 362,from about amino acid 394 to about amino acid 399, from about amino acid427 to about amino acid 432 and from about amino acid 472 to about aminoacid 477 and a prokaryotic membrane lipoprotein lipid attachment sitefrom about amino acid 136 to about amino acid 146. Clone DNA59817-1703has been deposited with ATCC on Nov. 17, 1998 and is assigned ATCCdeposit no. 203470.

[3480] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 38 (SEQ ID NO: 63), evidenced significanthomology between the PRO1772 amino acid sequence and the followingDayhoff sequences: P_R30823, MDP1_PIG, MDP1_HUMAN, P_R13857, P_R53920,MDP1_MOUSE, P_R30822, JC4222, CELF52C6_(—)2 and MYV027_(—)13.

Example 23 Isolation of cDNA Clones Encoding Human PRO1248

[3481] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 7494. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56056.

[3482] In light of the sequence homology between the DNA56056 sequenceand an EST contained within the Merck EST clone no. AA404441, the MerckEST clone no. AA404441 was purchased and the cDNA insert was obtainedand sequenced. The sequence of this cDNA insert is shown in FIG. 39 andis herein designated as DNA60278-1530.

[3483] Clone DNA60278-1530 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 122-124and ending at the stop codon at nucleotide positions 671-673 (FIG. 39).The predicted polypeptide precursor is 183 amino acids long (FIG. 40).The full-length PRO1248 protein shown in FIG. 40 has an estimatedmolecular weight of about 20,574 daltons and a pI of about 6.60.Analysis of the full-length PRO1248 sequence shown in FIG. 40 (SEQ IDNO: 68) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 20, a transmembrane domain fromabout amino acid 90 to about amino acid 112 and potentialN-glycosylation sites from about amino acid 21 to about amino acid 24,from about amino acid 38 to about amino acid 41 and from about aminoacid 47 to about amino acid 50. Clone DNA60278-1530 has been depositedwith ATCC on September 1, 1998 and is assigned ATCC deposit no. 203170.

[3484] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 40 (SEQ ID NO: 68), evidenced significanthomology between the PRO1248 amino acid sequence and the followingDayhoff sequences: AF026198_(—)5, CELR12C12_(—)5, PN0563, S64541_(—)1,PN0564, P_R44881 and XLU78189_(—)1.

Example 24 Isolation of cDNA Clones Encoding Human PRO1316

[3485] The extracellular domain (ECD) which includes the signalsequence, if any, of publicly available databases known to containsecreted sequences were used to search various publicly available EST(Expressed Sequenced Tag) databases (GenBank, Merck/Wash. U). The searchwas performed using the computer program BLAST or BLAST2 [Altschul etal., Methods in Enzymology 266: 460-480 (1996)] as a comparison of theECD protein sequences to a 6 frame translation of the EST sequences.Those comparisons resulting in a BLAST score of 70 (or in some cases 90)or greater that did not did not encode known proteins were clustered andassembled into consensus DNA sequences with the program “phrap ” (PhilGreen, University of Washington, Seattle, Wash.).

[3486] The above search resulted in the identification of the EST,designated W55979 which showed homology with the secreted protein Dkk-1.The clone corresponding to EST W55979 (clone NbHH19W) was purchased fromMerck/Washington University and the cDNA insert was obtained andsequenced in its entirety.

[3487] The nucleic acid sequence corresponding to the full lengthPRO1316 (designated DNA60608-1577) encoded by the purchased clone, isshown in FIG. 41 (SEQ ID NO: 69). DNA60608-1577 contains a single openreading frame with an apparent translational initiation site atnucleotide positions 211-213, and a stop codon at nucleotide positions988-990 (FIG. 42; SEQ ID NO: 70). The predicted polypeptide precursor is259 amino acids long. Additional regions of significant interest includethe nucleotide residues encoding the signal peptide (211-283), anN-glycosylation site (364-366), and the Zn(2)-Cys(6) binuclear clusterdomain (505-655). Clone DNA60608-1577 has been deposited with ATCC andis assigned ATCC deposit no. 203126. The full-length PRO1316 proteinshown in FIG. 42 has an estimated molecular weight of about 28,447daltons and a pI of about 9.48.

[3488] Based on a BLAST and FastA sequence alignment analysis (using theALIGN computer program) of the full-length sequence, PRO1316 showssignificant amino acid sequence identity to the dickkopf family ofproteins. Additionally, DNA60608 has shown homology to AF030433_(—)1,LFE4_CHICK, COL_RABIT, YQI6_CAEEL, ITB6_HUMAN, CONO_LYMST, S41033,D63483_(—)1, D86864_(—)1 and AB001978_(—)1.

Example 25 Isolation of cDNA Clones Encoding Human PRO1197

[3489] An initial DNA sequence, referred to herein as DNA56267, wasidentified using a yeast screen, in a human SK-Lu-1 adenocarcinoma cDNAlibrary that preferentially represents the 5′ ends of the primary cDNAclones. DNA56267 was used to synthesize oligonucleotides for use asprobes to isolate a clone of the full-length coding sequence for PRO1197from a human breast carcinoma cDNA library. SEQ ID NO:73:5′AATTCATGGCAAATATTTCCCTTCCC3′ (forward); SEQ ID NO:74:5′TGGTAAACTGGCCCAAACTCGG3′ (reverse); and SEQ ID NO:75:5′TTAAAGTCATCCGTCCTTGGCTCAGGATTTGGAGAGCTTGCACCACCAAA3′ (probe).

[3490] The full length DNA60611-1524 clone shown in FIG. 43 contained asingle open reading frame with an apparent translational initiation siteat nucleotide positions 311-313 and ending at the stop codon found atnucleotide positions 1400-1402 (FIG. 43; SEQ ID NO: 71). The predictedpolypeptide precursor (FIG. 44, SEQ ID NO: 72) is 363 amino acids long.The signal peptide is at about amino acids 1-24 of SEQ ID NO: 72.PRO1197 has a calculated molecular weight of approximately 38,825daltons and an estimated pI of approximately 9.88. Clone DNA60611-1524has been deposited with ATCC and is assigned ATCC deposit no. 203175.

[3491] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 44 (SEQ ID NO: 72), revealed sequence identitybetween the PRO1197 amino acid sequence and the following Dayhoffsequences (information from database incorporated herein): Y144_HUMAN,I47141 (a gastric mucin, mucins are described in Ann. NY Acad. Sci.,140(2):804-834 (1967), AMYH_YEAST, CELK06A9_(—)3, CELZK783_(—)1,HKR1_YEAST, AB003521_(—)1, D87895_(—)1, S61993 and YM96_YEAST.

Example 26 Isolation of cDNA Clones Encoding Human PRO1293

[3492] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 115204. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56522.

[3493] In light of the sequence homology between the DNA56522 sequenceand an EST contained within the Incyte EST clone no. 2966119, the IncyteEST clone no. 2966119 was purchased and the cDNA insert was obtained andsequenced. The sequence of this cDNA insert is shown in FIG. 45 and isherein designated as DNA60618-1557.

[3494] Clone DNA60618-1557 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 37-39 andending at the stop codon at nucleotide positions 1060-1062 (FIG. 45).The predicted polypeptide precursor is 341 amino acids long (FIG. 46).The full-length PRO1293 protein shown in FIG. 46 has an estimatedmolecular weight of about 38,070 daltons and a pI of about 6.88.Analysis of the full-length PRO1293 sequence shown in FIG. 46 (SEQ IDNO: 77) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 19, a transmembrane domain fromabout amino acid 237 to about amino acid 262, a potentialN-glycosylation site from about amino acid 205 to about amino acid 208,a cell attachment sequence from about amino acid 151 to about amino acid152 and an amino acid sequence block having homology tocoproporphyrinogen III oxidase proteins from about amino acid 115 toabout amino acid 140. Clone DNA60618-1557 has been deposited with ATCCon Sep. 29, 1998 and is assigned ATCC deposit no. 203292.

[3495] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 46 (SEQ ID NO: 77), evidenced significanthomology between the PRO1293 amino acid sequence and the followingDayhoff sequences: HSVCD54_(—)1, A33_HUMAN, AF009220_(—)1,HSU82279_(—)1, AF004230_(—)1, P_R13272, AF004231_(—)1, AF043644_(—)1,S44125 and HSIGGHC85_(—)1.

Example 27 Isolation of cDNA Clones Encoding Human PRO1380

[3496] A cDNA sequence isolated in the amylase screen described inExample 2 above is herein designated DNA45776. Based on the DNA45776sequence, oligonucleotide probes were generated and used to screen ahuman retina library prepared as described in paragraph 1 of Example 2above. The cloning vector was pRK5B (pRK5B is a precursor of pRK5D thatdoes not contain the SfiI site; see, Holmes et al., Science,253:1278-1280 (1991)), and the cDNA size cut was less than 2800 bp.

[3497] PCR primers (forward and reverse) were synthesized: forward PCRprimer (45776.f1) 5′-TTTTGCGGTCACCATTGTCTGC-3′ (SEQ ID NO:80) andreverse PCR primer (45776.r1) 5′-CGTAGGTGACACAGAAGCCCAGG-3′ (SEQ IDNO:81).

[3498] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA45776 sequence which had the followingnucleotide sequence: hybridization probe (45776.p1)5′-TACGGCATGACCGGCTCCTTTCCTATGAGGAACTCCCAGGCACTGATAT-3′ (SEQ ID NO:82).

[3499] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1380 gene usingthe probe oligonucleotide and one of the PCR primers.

[3500] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 36-38, and a stop signal at nucleotide positions1461-1463 (FIG. 47; SEQ ID NO: 78). The predicted polypeptide precursoris 470 amino acids long has a calculated molecular weight ofapproximately 51,715 daltons and an estimated pI of approximately 7.86.Additional features include transmembrane domains at about amino acids50-74, 105-127, 135-153, 163-183,228-252, 305-330, and 448-472;potential N-glycosylation sites at about amino acids 14-17 and 84-87;and a dihydro reductase signature at about amino acids 60-68.

[3501] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 48 (SEQ ID NO: 79), evidenced homology betweenthe PRO1380 amino acid sequence and the following Dayhoff sequences:HSU81375_(—)1, CEZK809_(—)6, CEK02E11_(—)1, AF034102_(—)1, JC4196,CEF36H2_(—)2, P_R92315, YAC2_YEAST, F1707_(—)13, and CEF44D12_(—)3.

[3502] Clone DNA60740-1615 was deposited with the ATCC on Nov. 3, 1998,and is assigned ATCC deposit no. 203456.

Example 28 Isolation of cDNA Clones Encoding Human PRO1265

[3503] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST Cluster No. 86995. This EST cluster sequencewas then compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and a proprietaryEST DNA database (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.)to identify existing homologies. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzymology 266:460-480 (1996)). Those comparisons resulting in a BLASTscore of 70 (or in some cases 90) or greater that did not encode knownproteins were clustered and assembled into a consensus DNA sequence withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.). One or more of the ESTs used in the assembly was derived from acDNA library prepared from RNA isolated from inflamed human adenoidtissue. The consensus sequence obtained therefrom is herein designatedDNA55717.

[3504] In light of the sequence homology between the DNA55717 sequenceand an EST sequence contained within Incyte EST no. 20965, EST clone no.20965 was purchased and the cDNA insert was obtained and sequenced. Thesequence of this cDNA insert is shown in FIG. 49 and is hereindesignated as DNA60764.

[3505] The full length clone shown in FIG. 49 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 79-81 and ending at the stop codon found atnucleotide positions 1780-1782 (FIG. 49; SEQ ID NO: 83). The predictedpolypeptide precursor (FIG. 50, SEQ ID NO: 84) is 567 amino acids long.PRO1265 has a calculated molecular weight of approximately 62,881daltons and an estimated pI of approximately 8.97. Additional featuresinclude a signal peptide sequence at about amino acids 1-21; potentialN-glycosylation sites at about amino acids 54-57, 134-137, 220-223, and559-562; and a region having amino acid sequence identity with D-aminoacid oxidase proteins at about amino acids 61-80.

[3506] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 50 (SEQ ID NO: 84), revealed significant sequenceidentity between the PRO1265 amino acid sequence and Dayhoff sequenceno. MMU70429_(—)1. Sequence homology was also found to exist between thefull-length sequence shown in FIG. 50 (SEQ ID NO: 84) and the followingadditional Dayhoff sequences: BC542A_(—)1, E69899, S76290, MTV014_(—)14,AOFB_HUMAN, ZMJ002204_(—)1, S45812_(—)1, DBRNAPD_(—)1, and CRT1_SOYBN.

[3507] Clone DNA60764-1533 was deposited with the ATCC on Nov. 10, 1998,and is assigned ATCC deposit no. 203452.

Example 29 Isolation of cDNA clones Encoding Human PRO1250

[3508] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 56523. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56103.

[3509] In light of the sequence homology between the DNA56103 sequenceand an EST sequence contained within the Incyte EST clone no. 3371784,the Incyte EST clone no. 3371784 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 51 and is herein designated as DNA60775-1532.

[3510] Clone DNA60775-1532 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 74-76 andending at the stop codon at nucleotide positions 2291-2293 (FIG. 51).The predicted polypeptide precursor is 739 amino acids long (FIG. 52).The full-length PRO1250 protein shown in FIG. 52 has an estimatedmolecular weight of about 82,263 daltons and a pI of about 7.55.Analysis of the full-length PRO1250 sequence shown in FIG. 52 (SEQ IDNO: 86) evidences the presence of the following: a type II transmembranedomain from about amino acid 61 to about amino acid 80, a putativeAMP-binding domain signature sequence from about amino acid 314 to aboutamino acid 325, and potential N-glycosylation sites from about aminoacid 102 to about amino acid 105, from about amino acid 588 to aboutamino acid 591 and from about amino acid 619 to about amino acid 622.Clone DNA60775-1532 has been deposited with ATCC on Sep. 1, 1998 and isassigned ATCC deposit no. 203173.

[3511] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 52 (SEQ ID NO: 86), evidenced significanthomology between the PRO1250 amino acid sequence and the followingDayhoff sequences: LCFB_HUMAN, S56508_(—)1, BNAMPBP2_(—)1, BNACS7_(—)1,CELT08B1_(—)6, CELC46F4_(—)2, AF008206_(—)6, CELR07C3_(—)11,LMU70253_(—)2 and AF008206_(—)7.

Example 30 Isolation of cDNA Clones Encoding Human PRO1475

[3512] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA45639. Based on the DNA45639 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1475.

[3513] PCR primers (forward and reverse) were synthesized: forward PCRprimer (45639.f1) 5′-GATGGCAAAACGTGTGTTTGACACG-3′ (SEQ ID NO:89) forwardPCR primer (45639.f2) 5′-CCTCAACCAGGCCACGGGCCAC-3′ (SEQ ID NO:90)reverse PCR primer (45639.r1) 5′-CCCAGGCAGAGATGCAGTACAGGC-3′ (SEQ IDNO:91) reverse PCR primer (45639.r2) 5′-CCTCCAGTAGGTGGATGGATTGGCTC-3′(SEQ ID NO:92)

[3514] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA45639 sequence which had the followingnucleotide sequence hybridization probe (45639.p1)5′-CTCACCTCATGAGGATGAGGCCATGGTGCTATTCCTCAACATGGTAG-3′ (SEQ ID NO:93)

[3515] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1475 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal braintissue.

[3516] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1475 (designated herein as DNA61185-1646[FIG. 53, SEQ ID NO: 87]; and the derived protein sequence for PRO1475.

[3517] The entire nucleotide sequence of DNA61185-1646 is shown in FIG.53 (SEQ ID NO: 87). Clone DNA61185-1646 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 130-132 and ending at the stop codon at nucleotide positions2110-2112 (FIG. 53). The predicted polypeptide precursor is 660 aminoacids long (FIG. 54). The full-length PRO1475 protein shown in FIG. 54has an estimated molecular weight of about 75,220 daltons and a pI ofabout 6.76. Analysis of the full-length PRO1475 sequence shown in FIG.54 (SEQ ID NO: 88) evidences the presence of the following: atransmembrane domain from about amino acid 38 to about amino acid 55 anda homologous region to mouse GNT1 from about amino acid 229 to aboutamino acid 660. Clone DNA61185-1646 has been deposited with ATCC on Nov.17, 1998 and is assigned ATCC deposit no. 203464.

[3518] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 54 (SEQ ID NO: 88), evidenced significanthomology between the PRO1475 amino acid sequence and the followingDayhoff sequences: GNT1_MOUSE, CGU65792_(—)1, CGU65791_(—)1, P_R24781,CELF48E3_(—)1, G786_HUMAN, P_W06547, GNT1_CAEEL, 219_HUMAN andEF07_MOUSE.

Example 31 Isolation of cDNA Clones Encoding Human PRO1377

[3519] An initial DNA sequence, referred to herein as DNA46892, wasidentified using a yeast screen, in a human umbilical vein endothelialcell cDNA library that preferentially represents the 5′ ends of theprimary cDNA clones. Based on the DNA46892 sequence, the followingoligonucleotides were synthesized for use as probes to isolate a cloneof the full-length coding sequence for PRO1377 from a human fetal kidneycDNA library: GTTGTGGGTGAATAAAGGAGGGCAG (SEQ ID NO: 96),CTGTGCTCATGTTCATGGACAACTG (SEQ ID NO: 97), andGGATGATTTCATCTCCATTAGCCTGCTGTCTCTGGCTATGTTGGTGGGAT (SEQ ID NO: 98).

[3520] The full length DNA61608-1606 clone shown in FIG. 55 contained asingle open reading frame with an apparent translational initiation siteat nucleotide positions 149-151 and ending at the stop codon found atnucleotide positions 1070-1072 (FIG. 55; SEQ ID NO: 94). The predictedpolypeptide precursor (FIG. 56, SEQ ID NO: 95) is 307 amino acids long.PRO1377 has a calculated molecular weight of approximately 32,251daltons and an estimated pI of approximately 6.62. Additional featuresinclude: a signal peptide at about amino acids 1-18; potentialN-glycosylation sites at about amino acids 29-32 and 241-244, andtransmembrane domains at about amino acids 37-56, 106-122, 211-230,240-260, and 288-304.

[3521] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 56 (SEQ ID NO: 95), revealed some homologybetween the PRO1377 amino acid sequence and the following Dayhoffsequences: CET01D3_(—)6, CET28F3_(—)4, CEF26D10_(—)3, S66962,ATX2_YEAST, CEH13N06_(—)8, S49959, YIC3_YEAST, G02273, and P_W35557.

[3522] Clone DNA61608-1606 has been deposited with ATCC and is assignedATCC deposit no. 203239.

Example 32 Isolation of cDNA Clones Encoding Human PRO1326

[3523] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated Incyte Cluster No. 59366, also referred herein as“DNA10295”. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). One or more ofthe ESTs was derived from RNA isolated from tumor tissue removed fromthe penis of a male with squamous cell carcinoma. The consensus sequenceobtained therefrom is herein designated DNA56257.

[3524] In light of the sequence homology between the DNA56257 sequenceand an EST sequence contained within Incyte EST no. 1450878, the ESTclone 1450878 was purchased and the cDNA insert was obtained andsequenced in its entirety. The sequence of this cDNA insert is shown inFIG. 57 and is herein designated as “DNA62808-1582”.

[3525] The full length clone shown in FIG. 57 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 112 to 114 and ending at the stop codon found atnucleotide positions 1315 to 1317 (FIG. 57; SEQ ID NO: 99). Thepredicted polypeptide precursor (FIG. 58, SEQ ID NO: 100) is 401 aminoacids long. Other features of the PRO1326 protein include: a signalsequence at about amino acids 1-29; a ribosomal protein S3Ae homologousregion at about amino acids 129-166; and potential N-glycosylation sitesat about amino acids 109-112, 144-147 and 398401. PRO1326 has acalculated molecular weight of approximately 45,333 daltons and anestimated pI of approximately 4.95. Clone DNA62808-1582 was depositedwith the ATCC on Oct. 20, 1998 and is assigned ATCC deposit no. 203358.

[3526] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 58 (SEQ ID NO: 100), revealed some homologybetween the PRO1326 amino acid sequence and the following Dayhoffsequences: AC004013_(—)1, HROMHCEMB_(—)1, CEF47A4_(—)2, A45592,MYSP_HUMAN, NFU43192_(—)1, ONGMBWMZ_(—)1, CELC25A11_(—)2,CELC25A11_(—)1, and A42184.

Example 33 Isolation of cDNA Clones Encoding Human PRO1249

[3527] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster no. 122605. This EST clustersequence was then compared to a variety of expressed sequence tag (EST)databases which included public EST databases (e.g., GenBank) and aproprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals, PaloAlto, Calif.) to identify existing homologies. The homology search wasperformed using the computer program BLAST or BLAST2 (Altshul et al.,Methods in Enzymology 266:460-480 (1996)). Those comparisons resultingin a BLAST score of 70 (or in some cases 90) or greater that did notencode known proteins were clustered and assembled into a consensus DNAsequence with the program “phrap” (Phil Green, University of Washington,Seattle, Wash.). The consensus sequence obtained therefrom is hereindesignated DNA56060.

[3528] In light of the sequence homology between the DNA56060 sequenceand an EST sequence contained within the Incyte EST clone no. 2630770,the Incyte EST clone no. 2630770 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 59 and is herein designated as DNA62809-1531.

[3529] Clone DNA62809-1531 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 3-5 andending at the stop codon at nucleotide positions 3270-3272 (FIG. 59).The predicted polypeptide precursor is 1089 amino acids long (FIG. 60).The full-length PRO1249 protein shown in FIG. 60 has an estimatedmolecular weight of about 118,699 daltons and a pI of about 8.49.Analysis of the full-length PRO1249 sequence shown in FIG. 60 (SEQ IDNO: 102) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 16, transmembrane domains fromabout amino acid position 317 to about amino acid position 341, fromabout amino acid position 451 to about amino acid position 470, fromabout amino acid position 481 to about amino acid position 500, fromabout amino acid position 510 to about amino acid position 527, fromabout amino acid position 538 to about amino acid position 555, fromabout amino acid position 831 to about amino acid position 850, fromabout amino acid position 1016 to about amino acid position 1034 andfrom about amino acid position 1052 to about amino acid position 1070, aleucine zipper pattern sequence from about amino acid 843 to about aminoacid 864 and potential N-glycosylations sites from about amino acid 37to about amino acid 40 and from about amino acid 268 to about amino acid271. Clone DNA62809-1531 has been deposited with ATCC on September 9,1998 and is assigned ATCC deposit no. 203237.

[3530] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 60 (SEQ ID NO: 102), evidenced significanthomology between the PRO1249 amino acid sequence and the followingDayhoff sequences: AC004472_(—)3, AB004539_(—)7, S64782, S62432,YJG2_YEAST, CELC27A12_(—)8, YKQ5_YEAST, AB009505_(—)3, SPBC24E9_(—)8 andAF060218_(—)4.

Example 34 Isolation of cDNA Clones Encoding Human PRO1315

[3531] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA35925. Based on the DNA35925 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1315.

[3532] PCR primers (forward and reverse) were synthesized: forward PCRprimer (35925.f1) 5′-CGCTGCTGCTGTTGCTCCTGG-3′ (SEQ ID NO: 105) forwardPCR primer (35925.f2) 5′-CAGTGTGCCAGGACTTTG-3′ (SEQ ID NO: 106) forwardPCR primer (35925.f3) 5′-AGTCGCAGGCAGCGTTGG-3′ (SEQ ID NO: 107) reversePCR primer (35925.r1) 5′-CTCCTCCGAGTCTGTGTGCTCCTGC-3′ (SEQ ID NO: 108)

[3533] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA35925 sequence which had the followingnucleotide sequence hybridization probe (35925.p1)5′-GGACGGGCAGTTCCCTGTGTCTCTGGTGGTTTGCCTAAACCTGCAAACATC-3′ (SEQ IDNO:109)

[3534] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1315 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human retinatissue.

[3535] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1315 (designated herein as DNA62815-1576[FIG. 61, SEQ ID NO: 103]; and the derived protein sequence for PRO1315.

[3536] The entire nucleotide sequence of DNA62815-1576 is shown in FIG.61 (SEQ ID NO: 103). Clone DNA62815-1576 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 121-123 and ending at the stop codon at nucleotide positions1447-1449 (FIG. 61). The predicted polypeptide precursor is 442 aminoacids long (FIG. 62). The full-length PRO1315 protein shown in FIG. 62has an estimated molecular weight of about 49,932 daltons and a pI ofabout 4.55. Analysis of the full-length PRO1315 sequence shown in FIG.62 (SEQ ID NO: 104) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 28, a transmembranedomain from about amino acid 140 to about amino acid 163 and potentialN-glycosylation sites from about amino acid 71 to about amino acid 74,from about amino acid 80 to about amino acid 83, from about amino acid89 to about amino acid 92, from about amino acid 204 to about amino acid207 and from about amino acid 423 to about amino acid 426. CloneDNA62815-1576 has been deposited with ATCC on Sep. 9, 1998 and isassigned ATCC deposit no. 203247.

[3537] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 62 (SEQ ID NO: 104), evidenced significanthomology between the PRO1315 amino acid sequence and the followingDayhoff sequences: MMU53696_(—)1, NVY08571_(—)2, B64560, STMSLPE_(—)1,P_R80508, P_W19258, A55817, GEN14043, AE000768_(—)7 andRNMUCASGP5_(—)1pSMC.

Example 35 Isolation of cDNA Clones Encoding Human PRO1599

[3538] Incyte EST no. 1491360 was identified as a sequence of interestusing the techniques described in Example 1 above having a BLAST scoreof 70 or greater that does not encode a known protein. The nucleotidesequence of EST no. 1491360 and its complementary sequence is designatedherein “DNA37192”. Based on the DNA37192 sequence, oligonucleotides weresynthesized: 1) to identify by PCR a cDNA library that contained thesequence of interest, and 2) for use as probes to isolate a clone of thefull-length coding sequence for PRO1599.

[3539] PCR primers (forward and reverse) were synthesized: forward PCRprimer: GACGTCTGCAACAGCTCCTGGAAG (37192.f1; SEQ ID NO:112) reverse PCRprimer: CGAGAAGGAAACGAGGCCGTGAG (37192.r1; SEQ ID NO:113)

[3540] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA37192 sequence which had the followingnucleotide sequence: hybridization probe:TGACACTTACCATGCTCTGCACCCGCAGTGGGGACAGCCACAGA (SEQ ID NO:114).

[3541] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1599 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal livertissue.

[3542] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1599 (designated herein as DNA62845-1684[FIG. 63, SEQ ID NO: 110]; and the derived protein sequence for PRO1599.

[3543] The entire coding sequence of PRO1599 is shown in FIG. 63 (SEQ IDNO: 110). Clone DNA62845-1684 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 69-71and an apparent stop codon at nucleotide positions 918-920. Thepredicted polypeptide precursor is 283 amino acids long. The full-lengthPRO1599 protein shown in FIG. 64 has an estimated molecular weight ofabout 30,350 daltons and a pI of about 9.66. Additional features ofPRO1599 include: a signal peptide at about amino acids 1-30; potentialN-glycosylation sites at about amino acids 129-132 and 189-192; apotential cAMP and cGMP-dependent protein kinase phosphorylation site atabout amino acids 263-266; potential N-myristoylation sites at aboutamino acids 28-33, 55-60, 174-179, and 236-241; a potential amidationsite at about amino acids 144-147; and a serine protease, trypsinfamily, histidine active site at about amino acids 70-75.

[3544] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 64 (SEQ ID NO: 11), revealed significant homologybetween the PRO1599 amino acid sequence and the following Dayhoffsequence: CFAD_PIG. Homology was also found between the PRO1599 aminoacids sequence and the following additional Dayhoff sequences.CFAD_HUMAN; P_R05421; P_R55757; P_R05772; GRAM_HUMAN; MUSLMET_(—)1;P_P80335; P_R55758; A42048_(—)1; and P_W05383.

[3545] Clone DNA62845-1684 was deposited with the ATCC on Oct. 20, 1998and is assigned ATCC deposit no. 203361.

Example 36 Isolation of cDNA Clones Encoding Human PRO1430

[3546] A DNA sequence designated herein as DNA49433 was obtained asdescribed in Example 1 above. Merck EST no. T49469, which was identifiedas being an EST of interest from the assembly, was purchased and thecDNA insert was obtained and sequenced in entirety.

[3547] DNA sequencing of the clone as described above gave thefull-length DNA sequence for PRO1430, which is designated herein as“DNA64842-1632” (SEQ ID NO: 115), and the derived protein sequence forPRO1430 (SEQ ID NO: 116). Clone DNA64842-1632 contains a single openreading frame with an apparent translational initiation site atnucleotide positions 82-84, and an apparent stop codon at nucleotidepositions 1075-1077. The full-length PRO1430 protein shown in FIG. 66has an estimated molecular weight of about 35,932 daltons and a pI ofabout 8.45. The predicted polypeptide precursor is 331 amino acids long.Additional features include a signal peptide at about amino acids 1-17;a potential N-glycosylation site at about amino acids 171-174, andregions of homology with short chain alcohol dehydrogenase familyproteins at about amino acids 29-51, 116-126, 180-217, and 222-230.

[3548] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 66 (SEQ ID NO: 116), revealed significanthomology between the PRO1430 amino acid sequence and Dayhoff sequenceno. P_W03198. Homology was also found between the PRO1430 amino acidsequence and the following Dayhoff sequences: MTV030_(—)10, MTV037_(—)2,A40116_(—)1, S42651, CEC15H11_(—)6, SPCC736_(—)13, SCU43704_(—)1,S19842, OXIR_STRAT, and OXIR_STRLI.

[3549] Clone DNA64842-1632 has been deposited with ATCC and is assignedATCC deposit no. 203278.

Example 37 Isolation of cDNA Clones Encoding Human PRO1374

[3550] A consensus DNA sequence encoding PRO1374 was assembled relativeto other EST sequences using phrap as described in Example 1 above. Thisconsensus sequence is designated herein “DNA47357”. Based on theDNA47357 consensus sequence, oligonucleotides were synthesized: 1) toidentify by PCR a cDNA library that contained the sequence of interest,and 2) for use as probes to isolate a clone of the full-length codingsequence for PRO1374.

[3551] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′ CGGGACAGGAGACCCAGAAAGGG3′ (SEQ ID NO:119) and; reverse PCRprimer 5′GGCCAAGTGATCCAAGGCATCTTC3′ (SEQ ID NO:120).

[3552] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA47357 sequence which had the followingnucleotide sequence: hybridization probe5′CTGCGGGACCTGACTAGATTCTACGACAAGGTACTTTCTTTGCATGGGG3′ (SEQ ID NO:121).

[3553] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1374 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from a humanadenocarcinoma cell line.

[3554] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1374 and the derived protein sequencefor PRO1374.

[3555] The entire coding sequence of PRO1374 is shown in FIG. 67 (SEQ IDNO: 117). Clone DNA64849-1604 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 20-22and an apparent stop codon at nucleotide positions 1653-1655 of SEQ IDNO: 117. The predicted polypeptide precursor is 544 amino acids long.The approximate locations of the signal peptide, N-glycosylation sites,leucine zipper patterns, and ribonucleotide reductase small subunitsignature are indicated in FIG. 68. Clone DNA64849-1604 has beendeposited with the ATCC and is assigned ATCC deposit no. 203468. Thefull-length PRO1374 protein shown in FIG. 68 has an estimated molecularweight of about 61,126 daltons and a pI of about 6.4.

[3556] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 68 (SEQ ID NO: 118), revealed sequence identitybetween the PRO1374 amino acid sequence and the following Dayhoffsequences: CEF35G2_(—)4, P_W37046, S44204, CET28D6_(—)1, CET20B3_(—)6,CELC14E2_(—)3, CUAL_CHICK, ATM7J2_(—)3, S74997 and HIVH5994R8_(—)1.

Example 38 Isolation of cDNA Clones Encoding Human PRO1311

[3557] A cDNA sequence isolated in the amylase screen described inExample 2 above is herein designated DNA37721. The DNA37721 sequence wasthen compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and proprietary ESTDNA databases (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.;Genentech, South San Franscisco, Calif.) to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into consensus DNA sequences with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated “DNA48616”. Based onthe DNA48616 sequence, oligonucleotide probes were generated and used toscreen a human aortic endothelial cell library prepared as described inparagraph 1 of Example 2 above. The cloning vector was pRK5B (pRK5B is aprecursor of pRK5D that does not contain the SfiI site; see, Holmes etal., Science, 253:1278-1280 (1991)), and the cDNA size cut was less than2800 bp.

[3558] PCR primers (forward and reverse) were synthesized: forward PCRprimer (48616.f1) 5′-ATCATCTATTCCACCGTGTTCTGGC-3′ (SEQ ID NO:124)reverse PCR Primer (48616.r1) 5′-GACAGAGTGCTCCATGATGATGTCC-3′ (SEQ IDNO:125)

[3559] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA48616 sequence which had the followingnucleotide sequence: hybridization probe (48616.p1)5′-CCTGTCTGTGGGCATCTATGCAGAGGTTGAGCGGCAGAAATATAAAACCC-3′ (SEQ ID NO:126)

[3560] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1311 gene usingthe probe oligonucleotide and one of the PCR primers.

[3561] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 195-197, and a stop signal at nucleotide positions1077-1079 (FIG. 69; SEQ ID NO: 122). The predicted polypeptide precursoris 294 amino acids long has a calculated molecular weight ofapproximately 33,211 daltons and an estimated pI of approximately 5.35Additional features include: a signal sequence at about amino acids1-44; possible transmembrane domains at about amino acids 22-42, 57-85,94-116, and 230-257; potential N-glycosylation sites at about aminoacids 118-121, 1899-192, and 230-233; potential tyrosine kinasephosphorylation sites at about amino acids 3-11 and 129-136; potentialN-myristoylation sites at about amino acids 80-85, 109-114, 180-185,218-223, 248-253, 276-281, 285-290, and 287-292; and a cell attachmentsequence at about amino acids 3-5.

[3562] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 70 (SEQ ID NO: 123), evidenced some homologybetween the PRO1311 amino acid sequence and the following Dayhoffsequences: AF065389_(—)1, AF053455_(—)1, CD63_HUMAN, A15_HUMAN,AF043906_(—)1, C151_HUMAN, AF053453_(—)1, AF054838_(—)1, P_R91446, andCD82_HUMAN.

[3563] Clone DNA64863-1573 was deposited with the ATCC on Sep. 9, 1998,and is assigned ATCC deposit no. 203251.

Example 39 Isolation of cDNA Clones Encoding Human PRO1357

[3564] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 69537. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56034.

[3565] In light of the sequence homology between the DNA56034 sequenceand an EST sequence contained within the Incyte EST clone no. 936239,the Incyte EST clone no. 936239 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 71 and is herein designated as DNA64881-1602.

[3566] Clone DNA64881-1602 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 74-76 andending at the stop codon at nucleotide positions 1526-1528 (FIG. 71).The predicted polypeptide precursor is 484 amino acids long (FIG. 72).The full-length PRO1357 protein shown in FIG. 72 has an estimatedmolecular weight of about 52,468 daltons and a pI of about 7.14.Analysis of the full-length PRO1357 sequence shown in FIG. 72 (SEQ IDNO: 128) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 21, potential N-glycosylationsites from about amino acid 48 to about amino acid 51, from about aminoacid 264 to about amino acid 267 and from about amino acid 401 to aboutamino acid 404, a glycosaminoglyean attachment site from about aminoacid 412 to about amino acid 415 and an amino acid sequence block havinghomology to the LBP/BPI/CETP family of proteins from about amino acid407 to about amino acid 457. Clone DNA64881-1602 has been deposited withATCC on Sep. 9, 1998 and is assigned ATCC deposit no. 203240.

[3567] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 72 (SEQ ID NO: 128), evidenced significanthomology between the PRO1357 amino acid sequence and the followingDayhoff sequences: MMU46068_(—)1, S17447, MMU1_(—)1, BPI_RABIT,P_W16808, P_R21844, PSP_MOUSE, HSLBPEX1_(—)1 and BTU79413_(—)1.

Example 40 Isolation of cDNA Clones Encoding Human PRO1244

[3568] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated cluster no. 7874. This EST cluster sequence wasthen compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and a proprietaryEST DNA databases (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.;Genentech, South San Francisco, Calif.) to identify existing homologies.One or more of the ESTs was derived from a library constructed fromtissue of the corpus cavernosum. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzymology 266:460-480 (1996)). Those comparisons resulting in a BLASTscore of 70 (or in some cases 90) or greater that did not encode knownproteins were clustered and assembled into a consensus DNA sequence withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.). The consensus sequence obtained therefrom is herein designated“DNA56011”.

[3569] In light of the sequence homology between the DNA56011 sequenceand an EST sequence contained within Incyte EST No. 3202349, the ESTclone no. 3202349 was purchased and the cDNA insert was obtained andsequenced. The sequence of this cDNA insert is shown in FIG. 73 (SEQ IDNO: 129) and is herein designated “DNA64883-1526”.

[3570] The full length clone shown in FIG. 73 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 9-11 and ending at the stop codon found atnucleotide positions 1014-1016 (FIG. 73; SEQ ID NO: 129). The predictedpolypeptide precursor (FIG. 74, SEQ ID NO: 130) is 335 amino acids long.PRO1244 has a calculated molecular weight of approximately 38,037daltons and an estimated pI of approximately 9.87. Other featuresinclude a signal peptide at about amino acids 1-29; transmembranedomains at about amino acids 183-205, 217-237, 271-287, and 301-321;potential N-glycosylation sites at about amino acids 71-74, and 215-218;and a cell attachment sequence at about amino acids 150-152.

[3571] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 74 (SEQ ID NO: 130), revealed homology betweenthe PRO1244 amino acid sequence and the following Dayhoff sequences:AF008554_(—)1, P_(—)485334, G02297, HUMN33S11_(—)1, HUMN33S10_(—)1,YO13_CAEEL, GEN13255, S49758, E70107, and ERP5_MEDSA.

[3572] Clone DNA64883-1526 was deposited with the ATCC on Sep. 9, 1998,and is assigned ATCC deposit no. 203253.

Example 41 Isolation of cDNA Clones Encoding Human PRO1246

[3573] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 56853. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56021.

[3574] In light of the sequence homology between the DNA56021 sequenceand an EST sequence contained within the Incyte EST clone no. 2481345,the Incyte EST clone no. 2481345 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 75 and is herein designated as DNA64885-1529.

[3575] Clone DNA64885-1529 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 119-121and ending at the stop codon at nucleotide positions 1727-1729 (FIG.75). The predicted polypeptide precursor is 536 amino acids long (FIG.76). The full-length PRO1246 protein shown in FIG. 76 has an estimatedmolecular weight of about 61,450 daltons and a pI of about 9.17.Analysis of the full-length PRO1246 sequence shown in FIG. 76 (SEQ IDNO: 132) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 15, potential N-glycosylationsites from about amino acid 108 to about amino acid 111, from aboutamino acid 166 to about amino acid 169, from about amino acid 193 toabout amino acid 196, from about amino acid 262 to about amino acid 265,from about amino acid 375 to about amino acid 378, from about amino acid413 to about amino acid 416 and from about amino acid 498 to about aminoacid 501 and amino acid sequence blocks having homology to sulfataseproteins from about amino acid 286 to about amino acid 315, from aboutamino acid 359 to about amino acid 369 and from about amino acid 78 toabout amino acid 97. Clone DNA64885-1529 has been deposited with ATCC onNov. 3, 1998 and is assigned ATCC deposit no. 203457.

[3576] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 76 (SEQ ID NO: 132), evidenced significanthomology between the PRO1246 amino acid sequence and the followingDayhoff sequences: P_R51355, CELK09C4_(—)1, BCU44852_(—)1, IDS_HUMAN,G65169, E64903, ARSA_HUMAN, GL6S_HUMAN, HSARSF_(—)1 and GEN12648.

Example 42 Isolation of cDNA Clones Encoding Human PRO1356

[3577] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 44725. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56023.

[3578] In light of the sequence homology between the DNA56023 sequenceand an EST sequence contained within the Incyte EST clone no. 4071746,the Incyte EST clone no. 4071746 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 77 and is herein designated as DNA6488-1601.

[3579] Clone DNA64886-1601 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 122-124and ending at the stop codon at nucleotide positions 812-814 (FIG. 77).

[3580] The predicted polypeptide precursor is 230 amino acids long (FIG.78). The full-length PRO1356 protein shown in FIG. 78 has an estimatedmolecular weight of about 24,549 daltons and a pI of about 8.56.Analysis of the full-length PRO1356 sequence shown in FIG. 78 (SEQ IDNO: 134) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 24, transmembrane domains fromabout amino acid 82 to about amino acid 102, from about amino acid 117to about amino acid 140 and from about amino acid 163 to about aminoacid 182, a potential N-glycosylation site from about amino acid 190 toabout amino acid 193 and an amino acid sequence block having homology tothe PMP-22/EMP/MP20 family of proteins from about amino acid 46 to aboutamino acid 59. Clone DNA64886-1601 has been deposited with ATCC on Sep.9, 1998 and is assigned ATCC deposit no. 203241.

[3581] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 78 (SEQ ID NO: 134), evidenced significanthomology between the PRO1356 amino acid sequence and the followingDayhoff sequences: AB00014_(—)1, AB000712_(—)1, A39484, AF000959_(—)1,AF035814_(—)1, HSU89916_(—)1, MMU19582_(—)1, P_R30059, HUAC004125_(—)1and PM22_RAT.

Example 43 Isolation of cDNA Clones Encoding Human PRO1275

[3582] A novel secreted molecule, designated herein as DNA57700, wasused to BLAST against Incyte's (LIFESEQ®, Incyte Pharmaceuticals, PaloAlto, Calif.) proprietary database and Genbank's public database.Positive clones were identified and used to generate assembly files byseqext program. The search was performed using the computer programBLAST or BLAST2 [Altschul et al., Methods in Enzymology, 266:460-480(1996)] as a comparison of the ECD protein sequences to a 6 frametranslation of the EST sequences. Those comparisons resulting in a BLASTscore of 70 (or in some cases, 90) or greater that did not encode knownproteins were clustered and assembled into consensus DNA sequences withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.).

[3583] A consensus DNA sequence was assembled relative to other ESTsequences using repeated cycles of BLAST and phrap. This consensussequence is designated herein “DNA59572”.

[3584] Based on the DNA59572 consensus sequence and its relation tosequences identified in the assembly, one of the clones ([Incyte clone2026581) including one of the sequences in the assembly was purchasedand sequenced. Incyte clone 2026581 came from a library constructed ofRNA from epidermal breast keratinocytes.

[3585] The entire coding sequence of PRO1275 is shown in FIG. 79 (SEQ IDNO: 135). Clone DNA64888-1542 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 37-39and an apparent stop codon at nucleotide positions 394-396 of SEQ ID NO:135. The predicted polypeptide precursor is 119 amino acids long. Thesignal peptide is at about amino acids 1-25 of SEQ ID NO: 136. CloneDNA64888-1542 has been deposited with ATCC and is assigned ATCC depositno. 203249. The full-length PRO1275 protein shown in FIG. 79 has anestimated molecular weight of about 13,248 daltons and a pI of about7.78.

[3586] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 80 (SEQ ID NO: 136), revealed sequence identitybetween the PRO1275 amino acid sequence and the following Dayhoffsequences (information from database incorporated herein): B48151(Mst98Cb), D86424_(—)1 (high-sulfur keratin protein), P_(—R)79964(connective tissue growth factor), CHRD_RAT (chordin), MT_DREPO(metallothionein), PLO5_PLETR (plectoxins), P_R25156 (Ig antigen),S73732_(—)1 (VLDP), AF025440_(—)1 (OIP4) and P_R32757 (IGF-II).

Example 44 Isolation of cDNA Clones Encoding Human PRO1274

[3587] A novel secreted molecule, designated herein as DNA57700, wasused to blast against Incyte's (LIFESEQ®, Incyte Pharmaceuticals, PaloAlto, Calif.) proprietary database and Genbank's public database.Positive clones were identified and used to generate assembly files byseqext program. The search was performed using the computer programBLAST or BLAST2 [Altschul et al., Methods in Enzymology, 266:460-480(1996)] as a comparison of the ECD protein sequences to a 6 frametranslation of the EST sequences. Those comparisons resulting in a BLASTscore of 70 (or in some cases, 90) or greater that did not encode knownproteins were clustered and assembled into consensus DNA sequences withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.).

[3588] A consensus DNA sequence was assembled relative to other ESTsequences using repeated cycles of BLAST and phrap. This consensussequence is designated herein “DNA59573”.

[3589] Based on the DNA59573 consensus sequence and its relation tosequences identified in the assembly, one of the clones (Incyte clone2623992) including one of the sequences in the assembly was purchasedand sequenced. Incyte clone 2623992 came from a library constructed ofRNA from epidermal breast keratinocytes.

[3590] The entire coding sequence of PRO1274 is shown in FIG. 81 (SEQ IDNO: 137). Clone DNA64889-1541 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 24-26,and an apparent stop codon at nucleotide positions 354-356 of SEQ ID NO:137. The predicted polypeptide precursor is 110 amino acids long. Thesignal peptide is at about 1-24 of SEQ ID NO: 138. Conserved regions inthe insulin family of proteins and an N-glycosylation site are indicatedin FIG. 82. Clone DNA64889-1541 has been deposited with ATCC and isassigned ATCC deposit no. 203250. The full-length PRO1274 protein shownin FIG. 82 has an estimated molecular weight of about 12,363 daltons anda pI of about 8.31.

[3591] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 82 (SEQ ID NO: 138), revealed sequence identitybetween the PRO1274 amino acid sequence and the following Dayhoffsequences (information from database incorporated herein): CEW05B2_(—)9,AF016922_(—)1 (insulin-like growth factor 1), B48151, A53640,BTIGF2REC_(—)1 (insulin-like growth factor 2), HSNF1GEN12_(—)1,TXA3_RADMA (neurotoxin 3), CXM1_CONGE, P_P61301, TXA4_RADMA (neurotoxin4).

Example 45 Isolation of cDNA Clones Encoding Human PRO1412

[3592] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated Incyte Cluster No. 101368 , also referred herein as“DNA10643”. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). One or more ofthe ESTs was derived from RNA isolated from fibroblasts of the prostatestroma removed from a male fetus. The consensus sequence obtainedtherefrom is herein designated “DNA58754”.

[3593] In light of the sequence homology between the DNA58754 sequenceand an EST sequence contained within EST no. 3597385, the EST clone3597385 was purchased and the cDNA insert was obtained and sequenced inits entirety. The sequence of this cDNA insert is shown in FIG. 83 andis herein designated as “DNA64897-1628”.

[3594] The full length clone shown in FIG. 83 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 142 to 144 and ending at the stop codon found atnucleotide positions 1075 to 1077 (FIG. 83; SEQ ID NO: 139). Thepredicted polypeptide precursor (FIG. 84, SEQ ID NO: 140) is 311 aminoacids long. Other features of the PRO1412 protein include: a signalsequence at about amino acids 1-28; a transmembrane domain at aboutamino acids 190-216; potential N-glycosylation sites at about aminoacids 49-52, 91-94, 108-111, 128-131, 135-138 and 190-193; a tyrosinekinase phosphorylation site at about amino acids 62-69; and alysosome-associated membrane glycoprotein duplicated domain at aboutamino acids 183-224. PRO1412 has a calculated molecular weight ofapproximately 33,908 daltons and an estimated pI of approximately 6.87.Clone DNA64897-1628 was deposited with the ATCC on Sep. 15, 1998, and isassigned ATCC deposit no. 203216.

[3595] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 84 (SEQ ID NO: 140), revealed some homologybetween the PRO1412 amino acid sequence and the following Dayhoffsequences: I50116, AF035963_(—)1, NCA2_(—RAT, I)61783, P_W07682,MMHC135G15_(—)3, S21461, MMIGL2_(—)1, ONHIGMV9A_(—)1 and MMU70448_(—)1.

Example 46 Isolation of cDNA Clones Encoding Human PRO1557

[3596] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST sequence from the Genentech database,designated “DNA58763. This EST sequence was then compared to a varietyof expressed sequence tag (EST) databases, which included the ESTdatabases listed above, to identify existing homologies. The homologysearch was performed using the computer program BLAST or BLAST2 (Altshulet al., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtained from theassembly is herein designated “DNA58763”.

[3597] In light of the sequence homology between the DNA58763 sequenceand an EST sequence contained within the EST no.2267403, EST no. 2267403was purchased and the cDNA insert was obtained and sequenced. Thesequence of this cDNA insert is shown in FIG. 85 and is hereindesignated as DNA64902-1667.

[3598] The full length clone shown in FIG. 85 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 287 to 289 and ending at the stop codon found atnucleotide positions 1640 to 1642 (FIG. 85; SEQ ID NO: 141). Thepredicted polypeptide precursor (FIG. 86, SEQ ID NO: 142) is 451 aminoacids long. PRO1557 has a calculated molecular weight of approximately49,675 daltons and an estimated pI of approximately 7.15. Additionalfeatures include: a signal sequence at about amino acids 1-25; apotential N-glycosylation site at about amino acids 114-117; a potentialcAMP and cGMP-dependent protein kinase phosphorylation site at aboutamino acids 38841; potential N-myristoylation sites at about amino acids54-49, 66-71, 146-151, and 367-372; potential amidation sites at aboutamino acids 36-39 and 205-208; and an ATP/GTP-binding site motif A(P-loop) at about amino acids 151-258.

[3599] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 86 (SEQ ID NO: 142), revealed significanthomology between the PRO1557 amino acid sequence and Dayhoff sequenceAF034606_(—)1. Homology was also found between the PRO1557 amino acidsequence and the following Dayhoff sequences: P_W31559, AF031230_(—)1,SOG_DROME, CA11_MOUSE, P_R41320, CHRD_RAT, P_W40288, NEL_CHICK, andHSMUC5B_(—)1.

[3600] Clone DNA64902-1667 was deposited with the ATCC on Oct. 6, 1998,and is assigned ATCC deposit no. 203317.

Example 47 Isolation of cDNA Clones Encoding Human PRO1286

[3601] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST Cluster No. 86809. This EST cluster sequencewas then compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and a proprietaryEST DNA database (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.)to identify existing homologies. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzymology 266:460-480 (1996)). Those comparisons resulting in a BLASTscore of 70 (or in some cases 90) or greater that did not encode knownproteins were clustered and assembled into a consensus DNA sequence withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.). ESTs in the assembly included those identified from tumors, celllines, or diseased tissue. One or more of the ESTs was obtained from acDNA library constructed from RNA isolated from diseased colon tissue.The consensus sequence obtained therefrom is herein designated DNA58822.

[3602] In light of the sequence homology between the DNA58822 sequenceand an EST sequence contained within EST no. 1695434, EST clone no.1695434 was purchased and the cDNA insert was obtained and sequenced.The sequence of this cDNA insert is shown in FIG. 87 and is hereindesignated DNA64903-1553 (SEQ ID NO: 143).

[3603] The full length clone shown in FIG. 87 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 93-95 and ending at the stop codon found atnucleotide positions 372-374 (FIG. 87; SEQ ID NO: 143). The predictedpolypeptide precursor (FIG. 88, SEQ ID NO: 144) is 93 amino acids long,with a signal sequence at about amino acids 1-18. PRO1286 has acalculated molecular weight of approximately 10,111 daltons and anestimated pI of approximately 9.70.

[3604] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 88 (SEQ ID NO: 144), revealed some homologybetween the PRO1286 amino acid sequence and the following Dayhoffsequences: SR5C_ARATH, CELC17H12_(—)11, MCPD_ENTAE, JQ2283, INVO_LEMCA,P_R07309, ADEVBCAGN_(—)4, AF020947_(—)1, CELT23H2_(—1,) and MDH_STRAR.

[3605] Clone DNA64903-1553 was deposited with the ATCC on Sep. 15, 1998and is assigned ATCC deposit no. 203223.

Example 48 Isolation of cDNA Clones Encoding Human PRO1294

[3606] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 10559. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (LIFESEQ®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA57203.

[3607] In light of the sequence homology between the DNA57203 sequenceand an EST sequence contained within the Incyte EST clone no. 3037763,the Incyte EST clone no. 3037763 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 89 and is herein designated as DNA64905-1558.

[3608] Clone DNA64905-1558 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 110-112and ending at the stop codon at nucleotide positions 1328-1330 (FIG.89). The predicted polypeptide precursor is 406 amino acids long (FIG.90). The full-length PRO1294 protein shown in FIG. 90 has an estimatedmolecular weight of about 46,038 daltons and a pI of about 6.50.Analysis of the full-length PRO1294 sequence shown in FIG. 90 (SEQ IDNO: 146) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 21 and potential N-glycosylationsites from about amino acid 177 to about amino acid 180 and from aboutamino acid 248 to about amino acid 251. Clone DNA64905-1558 has beendeposited with ATCC on Sep. 15, 1998 and is assigned ATCC depositno.203233.

[3609] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 90 (SEQ ID NO: 146), evidenced significanthomology between the PR01294 amino acid sequence and the followingDayhoff sequences: I73636, AF028740_(—)1, AB006686S3_(—)1, P_R98225,RNU78105_(—)1, CELC48E7_(—)4, CEF11C3_(—)3, SCP1_MESAU, TPM3_HUMAN andCELK05B2_(—)3.

Example 49 Isolation of cDNA Clones Encoding Human PRO1347

[3610] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA47373”. Based on the DNA47373consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1347.

[3611] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′GCGTGGTCCACCTCTACAGGGACG3′ (SEQ ID NO:149); and reverse PCRprimer 5′GGAACTGACCCAGTGCTGACACC3′ (SEQ ID NO:150).

[3612] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA47373 sequence which had the followingnucleotide sequence: hybridization probe5′GCAGATGCCACAGTATCAAGGCAGGACAAAACTGGTGAAGGATTC3′( SEQ ID NO:151).

[3613] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1347 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human smallintestine.

[3614] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1347 and the derived protein sequencefor PRO1347.

[3615] The entire coding sequence of PRO1347 is shown in FIG. 91 (SEQ IDNO: 147). Clone DNA64950-1590 contains a single open reading frame withan apparent translational initiation site at nucleotide positions183-185, and an apparent stop codon at nucleotide positions 1683-1685 ofSEQ ID NO: 147. The predicted polypeptide precursor is 500 amino acidslong. The signal peptide is at about amino acids 1-17 and thetransmembrane domain is at about 239-255 of SEQ ID NO: 148. CloneDNA64950-1590 has been deposited with ATCC and is assigned ATCC depositno. 203224. The full-length PRO1347 protein shown in FIG. 92 has anestimated molecular weight of about 56,748 daltons and a pI of about8.5.

[3616] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 92 (SEQ ID NO: 148), revealed sequence identitybetween the PRO1347 amino acid sequence and the following Dayhoffsequences (data incorporated herein): BUTY_HUMAN, AF033107_(—)1,HSU90142_(—)1, HSU90144_(—)1, HSB73_(—)1, HS111M5_(—)2, RO52_HUMAN,AF018080_(—)1, HSAJ03147_(—)4, and MOG_MOUSE.

Example 50 Isolation of cDNA Clones Encoding Human PRO 1305

[3617] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA38103. Based on the DNA38103 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1305.

[3618] PCR primers (forward and reverse) were synthesized: forward PCRprimer (38103.f1) 5′-AACTGCTCTGTGGTTGGAAGCCTG-3′ (SEQ ID NO:154) reversePCR primer (38103.r1) 5′-CAGTCACATGGCTGACAGACCCAC-3′ (SEQ ID NO:155)

[3619] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA38103 sequence which had the followingnucleotide sequence hybridization probe (38103.p1)5′-AGGTTATCAGGGGCTTCACTGTGAAACCTGCAAAGAGG-3′ (SEQ ID NO:156)

[3620] In order to screen several libraries for a source of a fill4engthclone, DNA from the libraries was screened by PCR amplification with thePCR primer pair identified above. A positive library was then used toisolate clones encoding the PRO1305 gene using the probe oligonucleotideand one of the PCR primers. RNA for construction of the cDNA librarieswas isolated from human fetal kidney tissue.

[3621] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1305 (designated herein as DNA64952-1568[FIG. 93, SEQ ID NO: 152]; and the derived protein sequence for PRO1305.

[3622] The entire nucleotide sequence of DNA64952-1568 is shown in FIG.93 (SEQ ID NO: 152). Clone DNA64952-1568 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 126-128 and ending at the stop codon at nucleotide positions900-902 (FIG. 93). The predicted polypeptide precursor is 258 aminoacids long (FIG. 94). The full-length PRO1305 protein shown in FIG. 94has an estimated molecular weight of about 25,716 daltons and apI ofabout 8.13. Analysis of the full-length PRO1305 sequence shown in FIG.94 (SEQ ID NO: 153) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 25, potentialN-glycosylation sites from about amino acid 30 to about amino acid 33,from about amino acid 172 to about amino acid 175, from about amino acid195 to about amino acid 198, from about amino acid 208 to about aminoacid 211 and from about amino acid 235 to about amino acid 238 and anEGF-like domain cysteine pattern signature sequence from about aminoacid 214 to about amino acid 225. Clone DNA64952-1568 has been depositedwith ATCC on Sep. 15, 1998 and is assigned ATCC deposit no. 203222.

[3623] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 94 (SEQ ID NO: 153), evidenced significanthomology between the PRO1305 amino acid sequence and the followingDayhoff sequences: CET22A3_(—)7, LMA2_MOUSE, AF055580_(—)1,AF016903_(—)1, LMB2_MOUSE, P_R71730, LMB3_MOUSE, LMG1_HUMAN, LMG1_DROMEand LMA5_MOUSE. As such, the PRO1305 polypeptide does show homology tolaminin and may be a laminin homolog.

Example 51 Isolation of cDNA Clones Encoding Human PRO1273

[3624] An expressed sequence tag (EST) DNA database (LIFESEQ®, IncytePharmaceuticals, Palo Alto, Calif.) was searched and an EST wasidentified. This sequence was blasted against public databases andIncyte's database. The search was performed using the computer programBLAST or BLAST2 [Altschul et al., Methods in Enzymology, 266:460-480(1996)] as a comparison of the extracellular domain (ECD) proteinsequences to a 6 frame translation of the EST sequences. Thosecomparisons resulting in a BLAST score of 70 (or in some cases, 90) orgreater that did not encode known proteins were clustered and assembledinto consensus DNA sequences with the program “phrap” (Phil Green,University of Washington, Seattle, Wash.).

[3625] A consensus DNA sequence was assembled relative to other ESTsequences using repeated cycles of BLAST and phrap. This consensussequence is designated herein “DNA60747”. Based on the DNA60747consensus sequence and its relation to a sequence within the assembly ofaligned sequences, Incyte clone 3541105 was purchased and sequenced infull. This Incyte clone came from a library constructed of RNA isolatedfrom seminal vesicle tissue.

[3626] The entire coding sequence of PRO1273 is shown in FIG. 95 (SEQ IDNO: 157). Clone DNA65402-1540 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 26-28and an apparent stop codon at nucleotide positions 515-517 of SEQ ID NO:157. The predicted polypeptide precursor is 163 amino acids long. Thesignal peptide is at about amino acids 1-20 and the conserved region inlipocalins is at about amino acids 25-36 of SEQ ID NO: 158. CloneDNA65402-1540 has been deposited with ATCC and is assigned ATCC depositno. 203252. The full-length PRO1273 protein shown in FIG. 96 has anestimated molecular weight of about 18,045 daltons and a pI of about4.87.

[3627] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 96 (SEQ ID NO: 158), revealed sequence identitybetween the PRO1273 amino acid sequence and the following Dayhoffsequences (information from database incorporated herein): PGHD_FELCA(prostaglandin-h2 d-isomerase precursor), S57748 (prostaglandin Dsynthetase precursor), LIPO_BUFMA (lipocalin precursor), S52354,QSP_CHICK, ECP19_(—)1, LACB_CAPHI, OLFA_RANPI, D87752_(—)1, andLACB_BOVIN.

[3628] Example 52

Isolation of cDNA Clones Encoding Human PRO1302

[3629] A consensus DNA sequence encoding PRO1302 was assembled relativeto other EST sequences using repeated cycles of phrap as described inExample 1 above. This consensus sequence is designated herein“DNA28742”. Based on the DNA28742 consensus sequence, the assembly fromwhich the consensus sequence was derived and other information anddiscoveries provided herein, the Incyte clone 3344926 (from a diseasedspleen tissue library) was purchased and sequenced in full. Sequencingprovided the full-length DNA sequence for PRO1302 and the derivedprotein sequence for PRO1302.

[3630] The entire coding sequence of PRO1302 is shown in FIG. 97 (SEQ IDNO: 159). Clone DNA65403-1565 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 43-45and an apparent stop codon at nucleotide positions 1432-1435 of SEQ IDNO: 159. The predicted polypeptide precursor is 463 amino acids long.The signal peptide is at about amino acids 1-15 and the transmembranesequence is at about amino acids 351-370 of SEQ ID NO: 160. CloneDNA65403-1565 has been deposited with the ATCC and is assigned ATCCdeposit no. 203230. The full-length PRO1302 protein shown in FIG. 98 hasan estimated molecular weight of about 50,082 daltons and a pI of about7.3.

[3631] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 98 (SEQ ID NO: 160), revealed sequence identitybetween the PRO1302 amino acid sequence and the following Dayhoffsequences (data incorporated herein): D86358_(—)1, D86359_(—)1,S71403_(—)1, MAG_HUMAN, JH0593, MMSIAL2_(—)1, C22A_HUMAN, PGBM_HUMAN,PGBM_HUMAN, LACH_DROME, and KMLS_HUMAN.

Example 53 Isolation of cDNA Clones Encodinz Human PRO1283

[3632] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA28753. Based on the DNA28753 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1283.

[3633] PCR primers (forward and reverse) were synthesized: forward PCRprimer (28753.f1) 5′-GGAGATGAAGACCCTGTTCCTG-3′ (SEQ ID NO:163) forwardPCR primer (28753.f11) 5′-GGAGATGAAGACCCTGTTCCTGGGTG-3′ (SEQ ID NO:164)reverse PCR primer (28753.r1) 5′-GTCCTCCGGAAAGTCCTTATC-3′ (SEQ IDNO:165) reverse PCR primer (28753.r11) 5′-GCCTAGTGTTCGGGAACGCAGCTTC-3′(SEQ ID NO:166)

[3634] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA28753 sequence which had the followingnucleotide sequence hybridization probe (28753.p1)5′-CAGGGACCTGGTACGTGAAGGCCATGGTG (SEQ ID NO:167)GTCGATAAGGACTTTCCGGAG-3′ hybridization probe (28753.p11)5′-CTGTCCTTCACCCTGGAGGAGGAGGATAT (SEQ ID NO:168) CACAGGGACCTGGTAC-3′

[3635] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1283 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human breast tumortissue.

[3636] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1283 (designated herein as DNA65404-1551[FIG. 99, SEQ ID NO: 161]; and the derived protein sequence for PRO1283.

[3637] The entire nucleotide sequence of DNA65404-1551 is shown in FIG.99 (SEQ ID NO: 161). Clone DNA65404-1551 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 45-47 and ending at the stop codon at nucleotide positions555-557 (FIG. 99). The predicted polypeptide precursor is 170 aminoacids long (FIG. 100). The full-length PRO1283 protein shown in FIG. 100has an estimated molecular weight of about 19,457 daltons and a pI ofabout 9.10. Analysis of the full-length PRO1283 sequence shown in FIG.100 (SEQ ID NO: 162) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 17. CloneDNA65404-1551 has been deposited with ATCC on Sep. 9, 1998 and isassigned ATCC deposit no. 203244

[3638] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 100 (SEQ ID NO: 162), evidenced significanthomology between the PRO1283 amino acid sequence and the followingDayhoff sequences: A40464, VEGP_HUMAN, ALL1_CANFA, LALP_TRIVU, S51803,XELPDS_(—)1, LIPO_BUFMA, S52354, QSP_CHICK and ERBP_RAT.

Example 54 Isolation of cDNA Clones Encoding Human PRO1279

[3639] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA30856. Based on the DNA30856 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1279.

[3640] PCR primers (forward and reverse) were synthesized: forward PCRprimer (30856.f1) 5′-GGCTGCGGGACTGGAAGTCATCGGG-3′ (SEQ ID NO:171)forward PCR primer (30856.f11) 5′-CTCCAGGCCATGAGGATTCTGCAG-3′ (SEQ IDNO:172) forward PCR primer (30856.f12) 5′-CCTCTGGTCTGTAACCAG-3′ (SEQ IDNO:173) reverse PCR primer (30856.r1) 5′-TCTGTGATGTTGCCGGGGTAGGCG-3′(SEQ ID NO:174) reverse PCR primer (30856.r11)5′-CGTGTAGACACCAGGCTTTCGGGTG-3′ (SEQ ID NO:175) reverse PCR primer(30856.r12) 5′-CCCTTGATGATCCTGGTC-3′ (SEQ ID NO:176)

[3641] Additionally, synthetic oligonucleotide hybridization probes wereconstructed from the consensus DNA30856 sequence which had the followingnucleotide sequences hybridization probe (30856.p1)5′-AGGCCATGAGGATTCTGCAGTTAATCCTG (SEQ ID NO:177)CTTGCTCTGGCAACAGGGCTT-3′ hybridization probe (30856.p11)5′-GAGAGACCAGGATCATCAAGGGGTTCGAG (SEQ ID NO:178) TGCAAGCCTCACTC-3′

[3642] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1279 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human lung tumortissue.

[3643] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1279 (designated herein as DNA65405-1547[FIG. 101, SEQ ID NO: 169]; and the derived protein sequence forPRO1279.

[3644] The entire nucleotide sequence of DNA65405-1547 is shown in FIG.101 (SEQ ID NO: 169). Clone DNA65405-1547 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 106-108 and ending at the stop codon at nucleotide positions856-858 (FIG. 101). The predicted polypeptide precursor is 250 aminoacids long (FIG. 102). The full-length PRO1279 protein shown in FIG. 102has an estimated molecular weight of about 27,466 daltons and a pI ofabout 8.87. Analysis of the full-length PRO1279 sequence shown in FIG.102 (SEQ ID NO: 170) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 18, a serineprotease, trypsin family, histidine active site from about amino acid 58to about amino acid 63, potential N-glycosylation sites from about aminoacid 99 to about amino acid 102, from about amino acid 165 to aboutamino acid 168, from about amino acid 181 to about amino acid 184 andfrom about amino acid 210 to about amino acid 213, a glycosaminoglycanattachment site from about amino acid 145 to about amino acid 148, aminoacid sequence blocks present in kringle domain proteins from about aminoacid 197 to about amino acid 209 and from about amino acid 47 to aboutamino acid 64, amino acid sequence blocks having homology to serineprotease, trypsin family, histidine proteins from about amino acid 199to about amino acid 209, from about amino acid 47 to about amino acid 63and from about amino acid 220 to about amino acid 243 and amino acidsequence blocks having homology to apple domain proteins from aboutamino acid 222 to about amino acid 249 and from about amino acid 189 toabout amino acid 222. Clone DNA65405-1547 has been deposited with ATCCon Nov. 17, 1998 and is assigned ATCC deposit no.203476.

[3645] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 102 (SEQ ID NO: 170), evidenced significanthomology between the PRO1279 amino acid sequence and the followingDayhoff sequences: I56559, S55066, KLK7_RAT, KLK1_RAT, KLKB_RAT,KLK3_MOUSE, KLK8_RAT, AF013988_(—)1, D78203_(—)1 and HSU62801_(—)1.

[3646] Additionally, DNA65405-1547 was obtained by purchasing the IncyteEST clone no. 2723646 and sequencing the insert of that clone, therebygiving the DNA65405-1547 sequence shown in FIG. 101 (SEQ ID NO: 169).

Example 55 Isolation of cDNA Clones Encoding Human PRO1304

[3647] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA35745. Based on the DNA35745 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1304.

[3648] PCR primers (forward and reverse) were synthesized: forward PCRprimer (35745.f1) 5′-GTGTTCTGCTGGAGCCGATGCC-3′ (SEQ ID NO:181) forwardPCR primer (35745.f2) 5′-GACATGGACAATGACAGG-3′ (SEQ ID NO:182) forwardPCR primer (35745.f3) 5′-CCTTTCAGGATGTAGGAG-3′ (SEQ ID NO:183) forwardPCR primer (35745.f4) 5′-GATGTCTGCCACCCCAAG-3′ (SEQ ID NO:184) reversePCR primer (35745.r1) 5′-GCATCCTGATATGACTTGTCACGTGGC-3′ (SEQ ID NO:185)reverse PCR primer (35745.r2) 5′-TACAAGAGGGAAGAGGAGTTGCAC-3′ (SEQ IDNO:186)

[3649] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA35745 sequence which had the followingnucleotide sequence hybridization probe (35745.p1)5′-GCCCATTATGACGGCTACCTGGCTAAAGA (SEQ ID NO:187)CGGCTCGAAATTCTACTGCAGCC-3′

[3650] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1304 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human ovary tissue.

[3651] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1304 (designated herein as DNA65406-1567[FIG. 103, SEQ ID NO: 179]; and the derived protein sequence forPRO1304.

[3652] The entire nucleotide sequence of DNA65406-1567 is shown in FIG.103 (SEQ ID NO: 179). Clone DNA65406-1567 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 23-25 and ending at the stop codon at nucleotide positions689-691 (FIG. 103). The predicted polypeptide precursor is 222 aminoacids long (FIG. 104). The full-length PRO1304 protein shown in FIG. 104has an estimated molecular weight of about 25,794 daltons and a pI ofabout 6.24. Analysis of the full-length PRO1304 sequence shown in FIG.104 (SEQ ID NO: 180) evidences the presence of the following: anendoplasmic reticulum targeting sequence from about amino acid 219 toabout amino acid 222, a potential N-glycosylation site from about aminoacid 45 to about amino acid 48, FKBP-type peptidyl-prolyl cis-transisomerase homology blocks from about amino acid 87 to about amino acid123 and from about amino acid 129 to about amino acid 142 and EF-handcalcium binding domain protein homology blocks from about amino acid 202to about amino acid 214 and from about amino acid 195 to about aminoacid 214. Clone DNA65406-1567 has been deposited with ATCC on Sep. 15,1998 and is assigned ATCC deposit no. 203219.

[3653] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 104 (SEQ ID NO: 180), evidenced significanthomology between the PRO1304 amino acid sequence and the followingDayhoff sequences: AF040252_(—)1, P_R28980, S71238, CELC05C8_(—)1,VFU52045_(—)1, S75144, FKB3_BOVIN, CELC50F2_(—)6, CELB0511_(—)12, andP_R41781.

[3654] The DNA65406-1567 sequence was also obtained by isolating andsequencing the insert of Incyte EST clone no. 2813577.

Example 56 Isolation of cDNA Clones Encoding Human PRO1317

[3655] Using the technique described in Example 1 above, Incyte EST no.33598 was identified as a sequence of interest having a BLAST score of70 or greater that did not encode a known protein. The sequence ofIncyte EST no. 33598 is designated herein as “DNA36958”. Based on theDNA36958 sequence, oligonucleotides can be synthesized: 1) to identifyby PCR a cDNA library that contains the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1317.

[3656] The following are suitable PCR primers (forward and reverse) thatcan be synthesized based on the DNA36958 sequence: forward PCR primer:AGGGACCATTGCTTCTTCCAGGCC (36958.f1; SEQ ID NO:190) reverse PCR primer:CGTTACATGTCTCCAAGGGGAATG (36958.r1; SEQ ID NO:191)

[3657] Additionally, a synthetic oligonucleotide hybridization probe canbe constructed from the consensus DNA36958 sequence having the followingnucleotide sequence: hybridization probe: CCTGTGCTAAGTGCCCCCCA(36958.p1; SEQ ID NO:192) AATGCTTCCTGTGTCAATAA CACTCACTGC

[3658] In order to screen several libraries for a source of afull-length clone, DNA from the libraries is screened by PCRamplification with the PCR primer pair identified above. A positivelibrary is then used to isolate clones encoding the PRO1317 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the eDNA libraries can be isolated from tissuecontaining the sequence of interest, for example from peripheral blood,particularly blood taken from a patient having a high leukocyte count(e.g hypereosinophilia).

[3659] The full-length DNA sequence for PRO1317, designated herein asDNA65408-1578 (FIG. 105; SEQ ID NO: 188) was obtained by purchasingIncyte EST no. 335958, obtaining the cDNA insert, and sequencing it inits entirety. Incyte clone no. 335958 originated from a libraryconstructed using RNA isolated from peripheral blood cells apheresedfrom a male patient afflicted with hypereosinophilia.

[3660] The entire coding sequence of PRO1317 is shown in FIG. 105 (SEQID NO: 188). Clone DNA65408-1578 contains a single open reading framewith an apparent translational initiation site at nucleotide positions6-8 and an apparent stop codon at nucleotide positions 228-230. Thepredicted polypeptide precursor is 74 amino acids long. The full-lengthPRO1317 protein shown in FIG. 106 has an estimated molecular weight ofabout 7,831 daltons and a pI of about 9.08. Additional features include:a signal peptide at about amino acids 1-18, potential N-glycosylationsites at about amino acids 34-37 and 39-42, and a microbodies C-terminaltargeting signal at amino acids 72-74.

[3661] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 106 (SEQ ID NO: 189), revealed significanthomology between the PRO1317 amino acid sequence and the Dayhoffsequence designated CD97_HUMAN. Additionally, some homology was foundbetween the PRO1317 amino acid sequence and the following Dayhoffsequences: GEN12618, CELZK783_(—)1, G156_PARPR, GIAVSPE_(—)1,AF040387_(—)1, S78059, I50617, XLSEK1_(—)1, and NEL2_RAT.

[3662] Clone DNA65408-1578 was deposited with the ATCC on Sep. 15, 1998,and is assigned ATCC deposit no. 203217.

Example 57 Isolation of cDNA Clones Encoding Human PRO1303

[3663] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA47347”. Based on the DNA47347consensus sequence and its homology to an Incyte EST within the assemblyfrom which DNA47347 was derived, Incyte clone 1430305 (from an ileumtissue library) was purchased and sequenced in full. The sequenceencoding PRO1303 was thereby identified.

[3664] The entire coding sequence of PRO1303 is shown in FIG. 107 (SEQID NO: 193). Clone DNA65409-1566 contains a single open reading framewith an apparent translational initiation site at nucleotide positions121-123 and an apparent stop codon at nucleotide positions 865-867. Thepredicted polypeptide precursor is 248 amino acids long. The signalpeptide is at about amino acids 1-17 of SEQ ID NO: 194. The locations ofN-glycosylation sites, active and conserved regions and domains arefurther indicated in FIG. 194. Clone DNA65409-1566 has been depositedwith ATCC and is assigned ATCC deposit no. 203232. The full-lengthPRO1303 protein shown in FIG. 108 has an estimated molecular weight ofabout 26,734 daltons and a pI of about 7.9.

[3665] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 108 (SEQ ID NO: 194), revealed sequence identitybetween the PRO1303 amino acid sequence and the following Dayhoffsequences (data incorporated herein): AB009849_(—)1, P_W08475,AF024605_(—)1, A42048_(—)1, TRY3_RAT, MMAE00066414, TRYL1_RAT,MMAE000663_(—)4, MMAE000665_(—)2, and MMAE00066412.

Example 58 Isolation of cDNA Clones Encoding Human PRO1306

[3666] Using the method described in Example 1 above, Incyte EST No.2449282, also referred to herein as DNA5918, was identified as asequence of interest having a BLAST score of 70 or greater that did notencode a known protein. From the DNA5918 sequence, a consensus sequencewas assembled using BLAST and the program “phrap” (Phil Green,University of Washington, Seattle, Wash.). This consensus sequence isdesignated herein as “DNA47399”. Based on the DNA47399 consensussequence, oligonucleotides can be synthesized: 1) to identify by PCR acDNA library that contains the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1306.

[3667] The entire coding sequence of PRO1306 shown in FIG. 109 (SEQ IDNO: 195), was obtained by purchasing Incyte EST no. 2449282, obtainingthe cDNA insert and sequencing it in its entirety. Clone DNA65410-1569contains a single open reading frame with an apparent translationalinitiation site at nucleotide positions 106-108 and an apparent stopcodon at nucleotide positions 556-558. The predicted polypeptideprecursor is 150 amino acids long. The full-length PRO1306 protein shownin FIG. 110 has an estimated molecular weight of about 17,068 daltons, apI of about 7.29, and a potential N-glycosylation site at about aminoacids 131-134.

[3668] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 110 (SEQ ID NO: 196), revealed significanthomology between the PRO1306 amino acid sequence and Dayhoff sequenceAIF1_HUMAN. Homology was also shown between the PRO1306 amino acidsequence and the following Dayhoff sequences: JC4902, BAR1_RAT,AF020281_(—)1, HSU95213_(—)1, TCH3_ARATH, LEY14765_(—)1,CATR_NAEGR,S35185, and AF065247_(—)1.

[3669] Clone DNA65410-1569, was deposited with the ATCC on Sep. 15, 1998and is assigned ATCC deposit no. 203231.

Example 59 Isolation of cDNA Clones Encoding Human PRO1336

[3670] An EST sequence was identified and entered into a proprietaryGenentech database. The EST was blasted against various EST databases.The EST databases included public EST databases (e.g., GenBank), and aproprietary EST database (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto,Calif.), and proprietary ESTs from Genentech. The search was performedusing the computer program BLAST or BLAST2 [Altschul et al., Methods inEnzymologv, 266:460-480 (1996)] as a comparison of the ECD proteinsequences to a 6 frame translation of the EST sequences. Thosecomparisons resulting in a BLAST score of 70 (or in some cases, 90) orgreater that did not encode known proteins were clustered and assembledinto consensus DNA sequences with the program “phrap” (Phil Green,University of Washington, Seattle, Wash.).

[3671] A consensus DNA sequence encoding PRO1336 was assembled relativeto other aligned EST sequences (forming an assembly) using phrap. Thisconsensus sequence is designated herein “DNA43319”. Based on theDNA43319 consensus sequence, oligonucleotides were synthesized: 1) toidentify by PCR a cDNA library that contained the sequence of interest,and 2) for use as probes to isolate a clone of the full-length codingsequence for PRO1336.

[3672] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′ATGGAGATTCCTGCCAACTTGCCG3′; and (SEQ ID NO:199) reverse PCRprimer 5′TTGTTGGCATTGAGGAGGAGCAGC3′. (SEQ ID NO:200)

[3673] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA43319 sequence which had the followingnucleotide sequence: hybridization probe5′GAGGGCATCGTCGAAATACGCCTAGAACAG (SEQ ID NO:201) AACTCCATCAAAGCCATCCC3′.

[3674] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1336 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal lungtissue.

[3675] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1336 (designated herein as DNA65423-1595[FIGS. 111A-B, SEQ ID NO: 198]; and the derived protein sequence forPRO1336.

[3676] The entire coding sequence of PRO1336 is shown in FIGS. 111A-B(SEQ ID NO: 198). Clone DNA65423-1595 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 83-85 and an apparent stop codon at nucleotide positions4652-4654 of SEQ ID NO: 198. The predicted polypeptide precursor is 1523amino acids long. The approximate locations of the signal peptide (aminoacids 1-27), aspartic acid and asparagine hydroxylation sites, EGF-likedomain cystein pattern signature regions, a leucine zipper patternregion, a region conserved in immunoglobulins and majorhistocompatibility complexes, and N-glycosylation sites are indicated inFIG. 112. Clone DNA65423-1595 has been deposited with the ATCC and isassigned ATCC deposit no. 203227. The full-length PRO1336 protein shownin FIG. 112 has an estimated molecular weight of about 167,715 daltonsand a pI of about 8.06.

[3677] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 112 (SEQ ID NO: 198), revealed sequence identitybetween the PRO1336 amino acid sequence and the following Dayhoffsequences (data incorporated herein): SLIT_DROME, CEF40E10_(—)1,LCU58977_(—)1, AF029779_(—)1, FBP1_STRPU, NOTC_XENLA, AC004663_(—)1,XELXDEL_(—)1, P_W05835 and HSU77720_(—)1.

Example 60 Isolation of cDNA Clones Encoding Human PRO1278

[3678] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “Consen5230”. In addition, the Consen5230consensus sequence was extended using repeated cycles of BLAST and phrapto extend the consensus sequence as far as possible using the sources ofEST sequences discussed above. The extended consensus sequence isdesignated herein as “DNA44801”. Based on the DNA44801 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1278.

[3679] PCR primers (forward and reverse) were synthesized: forward PCRprimers: GCAGGCTTTGAGGATGAAGGCTGC (44801.f1; SEQ ID NO:204) andCTCATTGGCTGCCTGGTCACAGGC (44801.f1; SEQ ID NO:205) reverse PCR primers:CCAGTCGGACAGGTCTCTCCCCTC (44801.r1; SEQ ID NO:206) andTCAGTGACCAAGGCTGAGCAGGCG (44801.r2; SEQ ID NO:207)

[3680] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA44801 sequence which had the followingnucleotide sequence: hybridization probe:CTACACTCGTTGCAAACTGGCAAAAATATTCTCGAGGGCTGGCCTGG (44801.p1; SEQ IDNO:208)

[3681] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1278 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human testis.

[3682] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1278 (designated herein as DNA66304-1546[FIG. 113, SEQ ID NO: 202]; and the derived protein sequence forPRO1278.

[3683] The entire coding sequence of PRO1278 is shown in FIG. 113 (SEQID NO: 202). Clone DNA66304-1546 contains a single open reading framewith an apparent translational initiation site at nucleotide positions141-143 and an apparent stop codon at nucleotide positions 585-587. Thepredicted polypeptide precursor is 148 amino acids long. The full-lengthPRO1278 protein shown in FIG. 114 has an estimated molecular weight ofabout 16,623 daltons and a pI of about 8.47. Additional features includea signal peptide sequence at about amino acids 1-19; a potentialN-glycosylation site at about amino acids 58-61; analpha-lactalbumin/lysozyrne C signature at about amino acids 94-112; andhomolgy with alpha-lactalbumin/lysozyme C at about amino acids 35-59,67-59 and 112-133.

[3684] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 114 (SEQ ID NO: 203), revealed significanthomology between the PRO1278 amino acid sequence and the followingDayhoff sequences: LYC1_ANAPL, LYC3_ANAPL, and LYC_HUMAN.

[3685] Clone DNA66304-1546 was deposited with the ATCC on Oct. 6, 1998,and is assigned ATCC deposit no. 203321.

Example 61 Isolation of cDNA Clones Encoding Human PRO1298

[3686] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from an Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a diseased prostatetissue library. The homology search was performed using the computerprogram BLAST or BLAST2 (Altshul et al., Methods in Enzymology266:460-480 (1996)). Those comparisons resulting in a BLAST score of 70(or in some cases 90) or greater that did not encode known proteins wereclustered and assembled into a consensus DNA sequence with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.). Theconsensus sequence obtained therefrom is herein designated DNA56389.

[3687] In light of the sequence homology between the DNA56389 sequenceand an EST sequence contained within an Incyte EST within the assemblyfrom with the consensus sequence was derived, Incyte clone 3355717 waspurchased and the cDNA insert was obtained and sequenced. The sequenceof this cDNA insert is shown in FIG. 115 and is herein designated asDNA66511-1563.

[3688] The full length clone shown in FIG. 115 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 94-96 and ending at the stop codon found atnucleotide positions 1063-1065 (FIG. 115; SEQ ID NO: 209). The predictedpolypeptide precursor (FIG. 116, SEQ ID NO: 210) is 323 amino acidslong. The signal peptide is at about amino acids 1-15 of SEQ ID NO: 210.PRO1298 has a calculated molecular weight of approximately 37,017daltons and an estimated pI of approximately 8.83. Clone DNA66511-1563was deposited with the ATCC on Sept. 15, 1998 and is assigned ATCCdeposit no. 203228.

[3689] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 116 (SEQ ID NO: 210), revealed sequence identitybetween the PRO1298 amino acid sequence and the following Dayhoffsequences (data incorporated herein): ALG2_YEAST, CAPM_STAAU, C69098,C69255, SUS2_MAIZE, A69143, S74778, AB009527_(—)13, AF050103_(—)2 andBBA224769_(—)1.

Example 62 Isolation of cDNA Clones Encoding Human PRO1301

[3690] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated Incyte Cluster No. 93492, also referred herein as“DNA10591”. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzvmology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). One or more ofthe ESTs was derived from a cDNA library constructed from RNA isolatedfrom lung tissue removed from a male with adenocarcinoma. The consensussequence obtained therefrom is herein designated “DNA57725”.

[3691] In light of the sequence homology between the DNA57725 sequenceand an EST sequence contained within the EST no. 3395984, the EST clone3395984 was purchased and the cDNA insert was obtained and sequenced inits entirety. The sequence of this cDNA insert is shown in FIG. 117 andis herein designated as “DNA66512-1564”.

[3692] The full length clone shown in FIG. 117 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 43 to 45 and ending at the stop codon found atnucleotide positions 1429 to 1431 (FIG. 117; SEQ ID NO: 211). Thepredicted polypeptide precursor (FIG. 118, SEQ ID NO: 212) is 462 aminoacids long. Other features ofthe PRO1301 proteininclude: a signalsequence at about amino acids 1-18; a transmembrane domain at aboutamino acids 271-290; a cytochrome P450 homologous region at about aminoacids 134-462; and potential N-glycosylation sites at about amino acids94-97, 217-220, and 246-249. PRO1301 has a calculated molecular weightof approximately 52,432 daltons and an estimated pI of approximately6.14. Clone DNA66512-1564 was deposited with the ATCC on Sep. 15, 1998and is assigned ATCC deposit no. 203218.

[3693] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 118 (SEQ ID NO: 212), revealed some homologybetween the PRO1301 amino acid sequence and the following Dayhoffsequences: PSU29243_(—)1, A69975, ATAC00448418, D78607_(—)1,CEB0331_(—)1, HUMCYTIIIA_(—)1, AF014800_(—)1, CELT13C5_(—)4,CELC45H4_(—)14, and CEC54E10_(—)1.

Example 63 Isolation of cDNA Clones Encoding Human PRO1268

[3694] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST No. 8879. This EST cluster sequence was thencompared to a variety of expressed sequence tag (EST) databases whichincluded public EST databases (e.g., GenBank) and a proprietary EST DNAdatabase (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.) toidentify existing homologies. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzvmology 266:460-480 (1996)). Those comparisons resulting in a BLASTscore of 70 (or in some cases 90) or greater that did not encode knownproteins were clustered and assembled into a consensus DNA sequence withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.). One or more of the ESTs was derived from a cDNA libraryconstructed from human brain tumor tissue taken from a cerebral meningeslesion. The consensus sequence obtained therefrom is herein designatedDNA56258.

[3695] In light of the sequence homology between the DNA56258 sequenceand an EST sequence contained within the Incyte EST no. 2944541, ESTclone no. 2944541 was purchased and the cDNA insert was obtained andsequenced. The sequence of this cDNA insert is shown in FIG. 119 and isherein designated as “DNA66519-1535”.

[3696] The full length clone shown in FIG. 119 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 89 to 91 and ending at the stop codon found atnucleotide positions 509 to 511 (FIG. 119; SEQ ID NO: 213). Thepredicted polypeptide precursor (FIG. 120, SEQ ID NO: 214) is 140 aminoacids long. PRO1268 has a calculated molecular weight of approximately15,503 daltons and an estimated pI of approximately 6.44. Additionalfeatures include a type II transmembrane domain at about amino acids12-28; type I transmembrane domains at about amino acids 51-66 and107-124; a potent N-glycosylation site at about amino acids 79-82, and aregion having homology with G-protein coupbled receptors at about aminoacids 59-99.

[3697] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 120 (SEQ ID NO: 214), revealed some homologybetween the PRO1268 amino acid sequence and Dayhoff sequence no.CEF39B2_(—)9. However, the percent sequence identity was determined tonot be significant.

[3698] Clone DNA66519-1535 was deposited with the ATCC on Sep. 15, 1998and is assigned ATCC deposit no. 203236.

Example 64 Isolation of cDNA Clones Encoding Human PRO1269

[3699] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST Cluster No. 101920. This EST cluster sequencewas then compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and a proprietaryEST DNA database (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.)to identify existing homologies. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzvmology 266:460-480 (1996)). Those comparisons resulting in a BLASTscore of 70 (or in some cases 90) or greater that did not encode knownproteins were clustered and assembled into a consensus DNA sequence withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.). The consensus sequence obtained therefrom is herein designatedDNA56509.

[3700] In light of the sequence homology between the DNA56509 sequenceand an EST sequence contained within the EST no. 103157, EST cloneno.103157 was purchased and the cDNA insert was obtained and sequenced.The sequence of this cDNA insert is shown in FIG. 121 and is hereindesignated as DNA66520-1536.

[3701] The full length clone shown in FIG. 121 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 26-29 and ending at the stop codon found atnucleotide positions 614-616 (FIG. 121; SEQ ID NO: 215). The predictedpolypeptide precursor (FIG. 122, SEQ ID NO: 216) is 196 amino acidslong, with a signal peptide located at about amino acids 1-20. There isa potential N-glycosylation site at about amino acids 112-115. PRO1269has a calculated molecular weight of approximately 21,731 daltons and anestimated pI of approximately 8.97.

[3702] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence aligrnent analysis of the full-lengthsequence shown in FIG. 122 (SEQ ID NO: 216), revealed significanthomology between the PRO1269 amino acid sequence and the amino acidsequence of Dayhoff sequence no. P_W23722. In addition, sequencehomology was found between the PRO1269 amino acid sequences and theamino acid sequences of the following Dayhoff sequences: MMTAG7_(—)1,MTV026_(—)16, NAAA_BPT3, S75616_(—)1, and NCP_PIG.

[3703] Clone DNA66520-1536 was deposited with the ATCC on Sep. 15, 1998,and is assigned ATCC deposit no. 203226.

Example 65 Isolation of cDNA Clones Encoding Human PRO1327

[3704] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence fromthelncytedatabase, designated Incyte ESTcluster sequence no. 173410. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and aproprietary EST DNA database (LIFESEQ®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56520.

[3705] In light of the sequence homology between the DNA56520 sequenceand an EST sequence contained within the Incyte EST clone no. 3451760,the Incyte EST clone no. 3451760 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 123 and is herein designated as DNA66521-1583.

[3706] Clone DNA66521-1583 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 55-57 andending at the stop codon at nucleotide positions 811-813 (FIG. 123). Thepredicted polypeptide precursor is 252 amino acids long (FIG. 124). Thefull-length PRO1327 protein shown in FIG. 124 has an estimated molecularweight of about 28,127 daltons and a pI of about 8.91. Analysis of thefull-length PRO1327 sequence shown in FIG. 124 (SEQ ID NO: 218)evidences the presence of the following: a signal peptide from aboutamino acid 1 to about amino acid 14, potential N-glycosylation sitesfrom about amino acid 62 to about amino acid 65, from about amino acid127 to about amino acid 130, from about amino acid 137 to about aminoacid 140 and from about amino acid 143 to about amino acid 146 and a2-oxo acid dehydrogenase acyltransferase homology block from about aminoacid 61 to about amino acid 71. Clone DNA66521-1583 has been depositedwith ATCC on Sep. 15, 1998 and is assigned ATCC deposit no. 203225.

[3707] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 124 (SEQ ID NO: 218), evidenced significanthomology between the PRO1327 amino acid sequence and the followingDayhoff sequences: NPH1_RAT, NPH2_MOUSE, OTU_DROME, D40750, BB61_RABIT,P_R23873, P_W09643, CAGHMGPA_(—)1, HUMPRP11_(—)1 and S670958_(—)1.

Example 66 Isolation of cDNA Clones Encoding Human PRO1382

[3708] Using the method described in Example 1 above, Incyte EST no.2719 was identified as a sequence of interest having a BLAST score of 70or greater that does not encode a known protein. The nucleotide sequenceof EST no. 2719 is designated herein “DNA42842”. Based on the DNA42842sequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1382.

[3709] PCR primers (forward and reverse) were synthesized: forward PCRprimer ACGGCTCACCATGGGCTCCG (42842.f1; SEQ ID NO:221) reverse PCR primerAGGAAGAGGAGCCCTTGGAGTCCG (42842.r1; SEQ ID NO:222)

[3710] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA42842 sequence which had the followingnucleotide sequence: hybridization probeCGTGCTGGAGGGCAAGTGTCTGGTGGTGTGCGACTCGAAC (42842.p1; SEQ ID NO:223).

[3711] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1382 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from a human breastcarcinoma.

[3712] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1382 (designated herein as DNA66526-1616[FIG. 125, SEQ ID NO: 219]; and the derived protein sequence forPRO1382.

[3713] The entire coding sequence of PRO1382 is shown in FIG. 125 (SEQID NO: 219). Clone DNA66526-1616 contains a single open reading framewith an apparent translational initiation site at nucleotide positions337-339 and an apparent stop codon at nucleotide positions 940-942. Thepredicted polypeptide precursor is 201 amino acids long. The full-lengthPRO1382 protein shown in FIG. 126 has an estimated molecular weight ofabout 21,808 daltons and a pI of about 9.04. Additional features includea signal peptide at about amino acids 1-27; potential N-glycosylationsites at about amino acids 29-32 and 88-91; and regions of homology withC1q proteins at about amino acids 92-126, 159-178, and 191-200.

[3714] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 126 (SEQ ID NO: 220), revealed significanthomology between the PRO1382 amino acid sequence Dayhoff sequence no.CERL_RAT. Homology was also revealed between the PRO1382 amino acidsequence and the following Dayhoff sequences: CERB_HUMAN, S76975_(—)1,A41752, HUMC1QB2_(—)1, A57131, CA1A_HUMAN, ACR3_MOUSE, and COLE_LEPMA.

[3715] Clone DNA66526-1616 has been deposited with ATCC and is assignedATCC deposit no. 203246.

Example 67 Isolation of cDNA Clones Encoding Human PRO1328

[3716] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 40671. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymologv 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56749.

[3717] In light of the sequence homology between the DNA56749 sequenceand an ESt sequence contained within the Incyte EST clone no. 4111192,the Incyte EST clone no. 4111192 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 127 and is herein designated as DNA66658-1584.

[3718] Clone DNA66658-1584 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 9-11 andending at the stop codon at nucleotide positions 780-782 (FIG. 127). Thepredicted polypeptide precursor is 257 amino acids long (FIG. 128). Thefull-length PRO1328 protein shown in FIG. 128 has an estimated molecularweight of about 28,472 daltons and a pI of about 9.33. Analysis of thefull-length PRO1328 sequence shown in FIG. 128 (SEQ ID NO: 225)evidences the presence of the following: a signal peptide from aboutamino acid 1 to about amino acid 19, transmembrane domains from aboutamino acid 32 to about amino acid 51, from about amino acid 119 to aboutamino acid 138, from about amino acid 152 to about amino acid 169 andfrom about amino acid 216 to about amino acid 235, a glycosaminoglycanattachment site from about amino acid 120 to about amino acid 123 andsodium/nuerotransmitter symporter family protein homology block fromabout amino acid 31 to about amino acid 65. Clone DNA66658-1584 has beendeposited with ATCC on Sep. 15, 1998 and is assigned ATCC deposit no.203229.

[3719] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 128 (SEQ ID NO: 225), evidenced significanthomology between the PRO1328 amino acid sequence and the followingDayhoff sequences: CEVF36H2L_(—)2, TIP2_TOBAC, AB009466_(—)16,ATU39485_(—)1, P_R60153, P_R77082, S73351, C69392, LEU95008_(—)1 andE64667.

Example 68 Isolation of cDNA Clones Encoding Human PRO1325

[3720] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 139524. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (Lifeseq®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56115.

[3721] In light of the sequence homology between the DNA56115 sequenceand an EST sequence contained within the Incyte EST clone no.3744079,the Incyte EST clone no. 3744079 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this CDNA insert is shown inFIG. 129 and is herein designated as DNA66659-1593.

[3722] Clone DNA66659-1593 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 51-53 andending at the stop codon at nucleotide positions 2547-2549 (FIG. 129).The predicted polypeptide precursor is 832 amino acids long (FIG. 130).The full-length PRO1325 protein shown in FIG. 130 has an estimatedmolecular weight of about 94,454 daltons and a pI of about 6.94.Analysis of the full-length PRO1325 sequence shown in FIG. 130 (SEQ IDNO: 227) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 18, transmembrane domains fromabout amino acid 292 to about amino acid 317, from about amino acid 451to about amino acid 470, from about amino acid 501 to about amino acid520, from about amino acid 607 to about amino acid 627 from about aminoacid 751 to about amino acid 770, a leucine zipper pattern sequence fromabout amino acid 497 to about amino acid 518 and potentialN-glycosylation sites from about amino acid 27 to about amino acid 30,from about amino acid 54 to about amino acid 57, from about amino acid60 to about amino acid 63, from about amino acid position 123 to aboutamino acid position 126, from about amino acid position 141 to aboutamino acid position 144, from about amino acid position 165 to aboutamino acid position 168, from about amino acid position 364 to aboutamino acid position 367, from about amino acid position 476 to aboutamino acid position 479, from about amino acid position 496 to aboutamino acid position 499, from about amino acid position 572 to aboutamino acid position 575, from about amino acid position 603 to aboutamino acid position 606 and from about amino acid position 699 to aboutamino acid position 702. Clone DNA66659-1593 has been deposited withATCC on Sep. 22, 1998 and is assigned ATCC deposit no. 203269.

[3723] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 130 (SEQ ID NO: 227), evidenced significanthomology between the PRO1325 amino acid sequence and the followingDayhoff sequences: CELR04E5_(—)1, CELZK721_(—)5, CELC30E1_(—)5,CELC30E1_(—)6, CELC30E1_(—)2, CEY37H2C_(—)1, CELC30E1_(—)7,CELT07H8_(—)7 and E64006.

Example 69 Isolation of cDNA Clones Encoding Human PRO1340

[3724] Using the method set forth in Example 1 above, Incyte EST no.878906 was identified as a sequence of interest having a BLAST score of70 or greater that does not encode a known protein. The nucleotidesequence of EST no. 878906 is designated herein “DNA42809”. Based on theDNA42809 sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1340.

[3725] PCR primers (forward and reverse) were synthesized: forward PCRprimer TCCAGGTGGACCCCACTTCAGG (42809.f1; SEQ ID NO:270) reverse PCRprimer GGGAGGCTTATAGGCCCAATCTGG (42809.r1; SEQ ID NO:271)

[3726] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA42809 sequence which had the followingnucleotide sequence: hybridization probeGGCTTCAGCAGCACGTGTGAAGTCGAAGTCGCAGTCACAGATATCAATGA (428O9.p1; SEQ IDNO:272)

[3727] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1340 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal kidneytissue.

[3728] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1340 (designated herein as DNA66663-1598[FIG. 131, SEQ ID NO: 228]; and the derived protein sequence forPRO1340.

[3729] The entire coding sequence of PRO1340 is shown in FIG. 131 (SEQID NO: 228). Clone DNA66663-1598 contains a single open reading framewith an apparent translational initiation site at nucleotide positions128-130 and an apparent stop codon at nucleotide positions 2549-2551.The predicted polypeptide precursor is 807 amino acids long. Thefull-length PRO1340 protein shown in FIG. 132 has an estimated molecularweight of about 87,614 daltons and a pI of about 4.83. Additionalfeatures include: a signal peptide at about amino acids 1-18; atransmembrane domain at about amino acids 762-784; a cell attachmentsequence at about amino acids 492-494; potential N-glycosylation sitesat about amino acids 517-520, 602-605 and 700-703; and cadherinextracellular repeat domains at about amino acids 307-351, 324-348,67-103, 97-141 and 114-138.

[3730] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 132 (SEQ ID NO: 229), revealed significanthomology between the PRO1340 amino acid sequence and Dayhoff sequenceno. I46536. Homology was also revealed between the PRO1340 amino acidsequence and the following Dayhoff sequences: S55396, RATPDRPT_(—)1,CADD₁₃ CHICK, CADD1_CHICK, CADB_CHICK, I50180, CAD4_CHICK, G2878, andDSC1_MOUSE.

[3731] Clone DNA66663-1598 has been deposited with ATCC and is assignedATCC deposit no. 203268.

Example 70 Isolation of cDNA Clones Encoding Human PRO1339

[3732] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA40652”. Within the consensus sequenceassembly was Incyte EST 2479394. Based on the consensus sequence andother discoveries and information provided herein, the clone includingIncyte EST 2479394 was purchased and sequenced in full. Sequencingprovided the nucleic acid sequence shown in FIG. 133 which includes thesequence encoding PRO1339.

[3733] Clone DNA66669-1597 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 9-11 andan apparent stop codon at nucleotide positions 1272-1274 of SEQ ID NO:233. The predicted polypeptide precursor is 421 amino acids long. Thesignal peptide is at about amino acids 1-16 of SEQ ID NO: 234. Theregion conserved in zinc carboxypeptidases and the N-glycosylation siteare indcated in FIG. 134. Clone DNA66669-1597 has been deposited withthe ATCC and is assigned ATCC deposit no. 203272. The full-lengthPRO1339 protein shown in FIG. 134 has an estimated molecular weight ofabout 47,351 daltons and a pI of about 6.61.

[3734] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 134 (SEQ ID NO: 234), revealed sequence identitybetween the PRO1339 amino acid sequence and the following Dayhoffsequences (data incorporated herein): P_W01505, CBP1_HUMAN,HSA224866_(—)1, P_R90293, YHT2_YEAST, CEF02D8_(—)4, CEW01A8_(—)6,P_W36815, HSU83411_(—)1 and CBPN_HUMAN.

Example 71 Isolation of cDNA Clones Encoding Human PRO1337

[3735] Using the method described in Example 1 above, a single IncyteEST was identified (EST No.1747546) and also referred to herein as“DNA4417”. To assemble a consensus sequence, repeated cycles of BLASTand phrap were used to extend the DNA4417 sequence as far as possibleusing the sources of EST sequences discussed above. The consensussequence is designated herein as “DNA45669”. Based on the DNA45669consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1337.

[3736] PCR primers (forward and reverse) were synthesized: forward PCRprimers: CAACCATGCAAGGACAGGGCAGG (45669.f1; SEQ ID NO:237) andCTTTGCTGTTGGCCTCTGTGCTCCCAACCATGCAAGGACAGGGCAGG (45669.r1; SEQ IDNO:238); reverse PCR primers: TGACTCGGGGTCTCCAAAACCAGC (45669.r1; SEQ IDNO:239) and GGTATAGGCGGAAGGCAAAGTCGG (45669.r2; SEQ ID NO:240);

[3737] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA45669 sequence which had the followingnucleotide sequence: hybridization probe:GGCATCTTACCTTTATGGAGTACTCTTTGCTGTTGGCCTCTGTGCTCC (45669.p1; SEQ IDNO:241).

[3738] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1337 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human tissue.

[3739] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1337 (designated herein as DNA66672-1586[FIG. 135, SEQ ID NO: 235]; and the derived protein sequence forPRO1337.

[3740] The entire coding sequence of PRO1337 is shown in FIG. 135 (SEQID NO: 235). Clone DNA66672-1586 contains a single open reading framewith an apparent translational initiation site at nucleotide positions60-62 and an apparent stop codon at nucleotide positions 1311-1313. Thepredicted polypeptide precursor is 417 amino acids long. The full-lengthPRO1337 protein shown in FIG. 136 has an estimated molecular weight ofabout 46,493 daltons and a pI of about 9.79.

[3741] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignrnent analysis of the full-lengthsequence shown in FIG. 136 (SEQ ID NO: 236) revealed significanthomology between the PRO1337 amino acid sequence and the Dayhoffsequence THBG_HUMAN. Homology was also found between the PRO1337 aminoacid sequence and the following Dayhoff sequences: KAIN_HUMAN,HSACT1_(—)1, IPSP_HUMAN, G02081, HAMHPP_(—)1, CPI6_RAT, S31507,AB000547_(—)1, and KBP_MOUSE.

[3742] Clone DNA66672-1586 was deposited with the ATCC on Sep. 22, 1998,and is assigned ATCC deposit no. 203265.

Example 72 Isolation of cDNA Clones Encoding Human PRO1342

[3743] A cDNA sequence isolated in the amylase screen described inExample 2 above is herein designated DNA43203. The DNA43203 sequence wasthen compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and proprietary ESTDNA databases (LIFESEQTM, Incyte Pharmaceuticals, Palo Alto, Calif.;Genentech, South San Francisco, Calif.) to identify existing homologies.The homology search was performed using the computer program BLAST orBLAST2 (Altshul et al., Methods in Enzvmology 266:460-480 (1996)). Thosecomparisons resulting in a BLAST score of 70 (or in some cases 90) orgreater that did not encode known proteins were clustered and assembledinto consensus DNA sequences with the program “phrap” (Phil Green,University of Washington, Seattle, Wash.). The consensus sequenceobtained therefrom is designated herein as “DNA48360”.

[3744] Based on the DNA48360 sequence, oligonucleotide probes weregenerated and used to screen a human esophageal tissue library preparedas described in paragraph 1 of Example 2 above. The cloning vector waspRK5B is a precursor of pRK5D that does not contain the SfiI site; see,Holmes et al., Science, 253:1278-1280 (1991)), and the cDNA size cut wasless than 2800 bp.

[3745] PCR primers (forward and reverse) were synthesized: forward PCRprimer: 5′-GAAGCACCAGCCTTTATCTCTTCACC-3′ (48360.f1; SEQ ID NO:244)reverse PCR primer: 5′-GTCAGAGTTGGTGGCTGTGCTAGC-3′ (48360.r1; SEQ IDNO:245)

[3746] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA48360 sequence which had the followingnucleotide sequence: hybridization probe:5′GGACCCAGGCATCTTGCTTTCCAGCCACAAAGAGACAGATGAAGATGC-3 (48360.p1; SEQ IDNO:246)

[3747] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1342 gene usingthe probe oligonucleotide and one of the PCR primers.

[3748] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 239-241, and a stop signal at nucleotide positions2027-2029 (FIG. 137; SEQ ID NO: 242). The predicted polypeptideprecursor is 596 amino acids long has a calculated molecular weight ofapproximately 57,173 daltons and an estimated pI of approximately 4.82.Additional features include: signal sequence at about amino acids 1-20;a transmembrane domain at about amino acids 510-532; a potentialN-glycosylation site at about amino acids 25-28; a glycosaminoglycanattachment site at about amino acids 325-328; and bacterialice-nucleation protein octamer repeats at about amino acids 284-337,404-457, 254-307, 359-412, 194-247, 239-292, 299-352, 134-187, 314-367,and 164-217.

[3749] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 138 (SEQ ID NO: 243), evidenced some homologybetween the PRO1342 amino acid sequence and the following Dayhoffsequences: CELZC178_(—)2, LMSAP2GN_(—)1, D88734_(—,) AMYH_YEAST,MMDSPPG_(—)1, VGLX_HSVEB, S52714, CELF59A6_(—)5, CELK06A9_(—)3, andYM96_YEAST.

[3750] Clone DNA66674-1599 was deposited with the ATCC on Sep. 22, 1998,and is assigned ATCC deposit no. 203281.

Example 73 Isolation of cDNA Clones Encoding Human PRO1343

[3751] A cDNA sequence isolated in the amylase screen described inExample 2 above was found, by the WU-BLAST2 sequence alignment computerprogram, to have no significant sequence identity to any known humanencoding nucleic acid. This cDNA sequence is herein designated DNA48921.Probes were generated from the sequence of the DNA48921 molecule andused to screen a human smooth muscle cell tissue library prepared asdescribed in paragraph 1 above. The cloning vector was pRK5B (pRK5B is aprecursor of pRK5D that does not contain the SfiI site; see, Holmes etal., Science, 253:1278-1280 (1991)), and the cDNA size cut was less than2800 bp.

[3752] The oligonucleotide probes employed were as follows: forward PCRprimer (48921.f1) 5′-CAATATGCATCTTGCACGTCTGG-3′ (SEQ ID NO:249) reversePCR primer (48921.r1) 5′-AAGCTTCTCTGCTTCCTTTCCTGC-3′ (SEQ ID NO:250)hybridization probe (48921.p1) 5′-TGACCCCATTGAGAAGGTCATTGAAGG (SEQ IDNO:251) GATCAACCGAGGGCTG-3′

[3753] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 71-73 and a stop signal at nucleotide positions812-814 (FIG. 139, SEQ ID NO: 247). The predicted polypeptide precursoris 247 amino acids long, has a calculated molecular weight ofapproximately 25,335 daltons and an estimated pI of approximately 7.0.Analysis of the full-length PRO1343 sequence shown in FIG. 140 (SEQ IDNO: 248) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 25 and a homologous region tocircumsporozoite repeats from about amino acid 35 to about amino acid225. Clone DNA66675-1587 has been deposited with ATCC on Sep. 22, 1998and is assigned ATCC deposit no. 203282.

[3754] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 140 (SEQ ID NO: 248), evidenced significanthomology between the PRO1343 amino acid sequence and the followingDayhoff sequences: CSP_PLACC, CEF25H8_(—)2, U88974_(—)40, BNAMRNAA_(—)1,BOBOPC3_(—)1, S58135, AF061832_(—)1, BHU52040_(—)1, HUMPROFILE_(—)1 andMTV023_(—)14.

[3755] Additionally, an Incyte EST clone (Incyte EST clone no. 4701148)having homology to the DNA48921 sequence was obtained and the insertsequenced, thereby giving rise to the DNA66675-1587 sequence shown inFIG. 139.

Example 74 Isolation of cDNA Clones Encoding Human PRO1480

[3756] Using the methods described in Example 1 above, Incyte EST Nos.550415 and 1628847 were identified as sequences of interest having BLASTscores of 70 or greater that did not encode known proteins. Thesesequences were clustered and assembled into a consensus DNA sequencewith the program “phrap” (Phil Green, University of Washington, Seattle,Wash.). This consensus sequence is designated herein as “DNA1395”. Inaddition, the “DNA1395” consensus sequence was extended using repeatedcycles of BLAST and phrap to extend the consensus sequence as far aspossible using the sources of EST sequences discussed above. Theextended consensus sequence is designated herein as “DNA40642”. Based onthe DNA40642 consensus sequence, oligonucleotides were synthesized: 1)to identify by PCR a cDNA library that contained the sequence ofinterest, and 2) for use as probes to isolate a clone of the full-lengthcoding sequence for PRO1480.

[3757] PCR primers (forward and reverse) were synthesized: forward PCRprimer: AGCCCGTGCAGAATCTGCTCCTGG (40642.f1; SEQ ID NO:254) reverse PCRprimers: TGAAGCCAGGGCAGCGTCCTC (40642.r1; SEQ ID NO:255) TGG;GTACAGGCTGCAGTTGGC (40642.r2; SEQ ID NO:256)

[3758] Additionally, synthetic oligonucleotide hybridization probes wereconstructed from the consensus DNA40642 sequence which had the followingnucleotide sequence: hybridization probes: AGAAGCCATGTGAGCAAGTCCAG(40642.p1; SEQ ID NO:257) TTCCAGCCCAACACAGTG; GAGCTGCAGATCTTCTCATCGGG(40642.p2; SEQ ID NO:258) ACAGCCCGTGCAGAATCTGCTC

[3759] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1480 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal kidneytissue.

[3760] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1480, designated herein as DNA67962-1649[FIG. 141, SEQ ID NO: 252]; and the derived protein sequence forPRO1480.

[3761] The entire coding sequence of PRO1480 is shown in FIG. 141 (SEQID NO: 252). Clone DNA67962-1649 contains a single open reading framewith an apparent translational initiation site at nucleotide positions241-243 and an apparent stop codon at nucleotide positions 2752-2754.The predicted polypeptide precursor is 837 amino acids long. Thefull-length PRO1480 protein shown in FIG. 142 has an estimated molecularweight of about 92,750 daltons and a pI of about 7.04. Additionalfeatures include: transmembrane domains at about amino acids 23-46 (typeII) and 718-738; potential N-glycosylation sites at about amino acids69-72, 96-99, 165-168, 410-413, 525-528, and 630-633; and a leucinezipper pattern at about amino acids 12-33.

[3762] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 142 (SEQ ID NO: 253), revealed significanthomology between the PRO1480 amino acid sequence and Dayhoff sequenceI48746. Homology was also shown between the PRO1480 amino acid sequenceand the following Dayhoff sequences: S66498; P_W17658; MMU69535_(—)1;HSU60800_(—)1; I48745; A49069; I48747; GGU28240_(—)1; and AF022946_(—)1.

[3763] Clone DNA67962-1649 has been deposited with ATCC and is assignedATCC deposit no. 203291.

Example 75 Isolation of cDNA Clones Encoding Human PRO1487

[3764] A single Merck EST, HSC2ID011, referredherein as “DNA8208”, wasidentified as an EST of interest having a BLAST score of 70 or greaterthat did not encode a known protein as described in Example 1 above. TheDNA8208 sequence was extended using repeated cycles of BLAST and theprogram 37 phrap” (Phil Green, University of Washington, Seattle, Wash.)to extend the sequence as far as possible using the sources of ESTsequences discussed above. The resulting consensus sequence isdesignated herein as “DNA68836”. Based on the DNA68836 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1487.

[3765] PCR primers (forward and reverse) were synthesized: forward PCRprimer: GTGCCACTACGGGGTGTGGACGAC (54209.f1; SEQ ID NO:261) and reversePCR primer TCCCATTTCTTCCGTGGTGCCCAG (54209.r1; SEQ ID NO:262)

[3766] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA68836 sequence which had the followingnucleotide sequence: hybridization probe CCAGAAGAAGTCCTTCATGATGCT(54209.p1; SEQ ID NO:263) CAAGTACATGCACGACCACTAC

[3767] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1487 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated human fetal kidneytissue.

[3768] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1487 (designated herein as DNA68836-1656(FIGS. 143A-B; SEQ ID NO: 259) and the derived protein sequence forPRO1487 (FIG. 144; SEQ ID NO: 260).

[3769] The entire coding sequence of PRO1487 is shown in FIGS. 143A-B(SEQ ID NO: 259). Clone DNA68836-1656 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 489-491 and an apparent stop codon at nucleotide positions2895-2897. The predicted polypeptide precursor is 802 amino acids longThe full-length PRO1487 protein shown in FIG. 144 has an estimatedmolecular weight of about 91,812 daltons and a pI of about 9.52.Additional features include a signal peptide at about amino acids 1-23;potential N-glycosylation sites at about amino acids 189-192, 623-626,and 796-799; and a cell attachment sequence at about amino acids 62-64.

[3770] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 144 (SEQ ID NO: 260), revealed significanthomology between the PRO1487 amino acid sequence and the followingDayhoff sequences: CET24D1_(—)1, S44860, CELC02H6_(—)1, CEC38H2_(—)3,CELC17A2_(—)5, CET09E11_(—)10, CEE03H4_(—)3, CELT22B11_(—)3,GGU82088_(—)1, and CEF56H6_(—)1.

[3771] Clone DNA68836-1656 was deposited with the ATCC on Nov. 3, 1998,and is assigned ATCC deposit no. 203455.

Example 76 Isolation of cDNA Clones Encoding Human PRO1418

[3772] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from an Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a placenta tissuelibrary. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated DNA58845.

[3773] In light of the sequence homology between the DNA58845 sequenceand an EST included in Incyte clone 1306026, that clone was purchasedand the cDNA insert was obtained and sequenced. The sequence of thiscDNA insert is shown in FIG. 145 and is herein designated asDNA68864-1629.

[3774] The full length clone shown in FIG. 145 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 138-140 and ending at the stop codon found atnucleotide positions 1188-1190 (FIG. 145; SEQ ID NO: 264). The predictedpolypeptide precursor (FIG. 146, SEQ ID NO: 265) is 350 amino acids longwith a signal peptide at about amino acids 1-19 of SEQ ID NO: 265.PRO1418 has a calculated molecular weight of approximately 39,003daltons and an estimated pI of approximately 5.59. Clone DNA68864-1629was deposited with the ATCC on Sep. 22, 1998 and is assigned ATCCdeposit no. 203276.

[3775] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 146 (SEQ ID NO: 265), revealed sequence identitybetween the PRO1418 amino acid sequence and the following Dayhoffsequences (data incorporated herein): AGA1_HAEIN (immunoglobulin a1protease precursor), P_W03740, CELT23E7_(—)1, SSN6_YEAST, MMPININ_(—)1,AB00993_(—)1, P_R52601, S22624, A10377_(—)1 and MUA1_XENLA.

Example 77 Isolation of cDNA Clones Encoding Human PRO1472

[3776] An Incyte sequence was identified and put in a computer todetermine whether it had homology with other proteins in databases. TheEST databases included public EST databases (e.g., GenBank), and theproprietary EST database (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto,Calif.). The search was performed using the computer program BLAST orBLAST2 [Altschul et al., Methods in Enzvmologv, 266:460-480 (1996)] as acomparison of the ECD protein sequences to a 6 frame translation of theEST sequences. Those comparisons resulting in a BLAST score of 70 (or insome cases, 90) or greater that did not encode known proteins wereclustered and assembled into consensus DNA sequences with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.).

[3777] A consensus DNA sequence encoding PRO1472 was assembled relativeto other EST sequences using phrap. This consensus sequence isdesignated herein “DNA62824”. Based on the DNA62824 consensus sequenceand other discoveries and information provided herein, the Incyte cloneincluding EST 1579843 (from a duodenal tissue library) found in theassembly was purchased and sequenced in full.

[3778] Sequencing provided the entire coding sequence of PRO1472 asshown in FIG. 147 (SEQ ID NO: 266). Clone DNA68866-1644 contains asingle open reading frame with an apparent translational initiation siteat nucleotide positions 134-136 and an apparent stop codon at nucleotidepositions 1532-1534 of SEQ ID NO: 266. The predicted polypeptideprecursor is 466 amino acids long. As indicated in FIG. 148, the signalpeptide is at about amino acid positions 1-17 and the transmembranedomains are at about positions 131-150 and 235-259 of SEQ ID NO: 267.Clone DNA68866-1644 has been deposited with ATCC and is assigned ATCCdeposit no. 203283. The full-length PRO1472 protein shown in FIG. 148has an estimated molecular weight of about 52,279 daltons and a pI ofabout 6.16.

[3779] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 148 (SEQ ID NO: 267), revealed sequence identitybetween the PRO1472 amino acid sequence and the following Dayhoffsequences (data incorporated herein): BUTY_HUMAN, HS45P21_(—)1,HS45P21_(—)3, HS45P21_(—)5, HS45P21_(—)4, HSU90142_(—)1, HSU90546_(—)1,AF033107_(—)1, MMHC135G15_(—)7 and HSB73_(—)1.

Example 78 Isolation of cDNA Clones Encoding Hurnan PRO1461

[3780] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated Incyte EST Cluster No. 159103, and also referred toherein as “DNA10747”. The DNA10747 sequence was then compared to avariety of EST databases which included public EST databases (e.g.,GenBank) and the LIFESEQ® database, to identify existing homologies. Thehomology search was performed using the computer program BLAST or BLAST2(Altshul et al., Methods in Enzvmology 266:460-480 (1996)). Thosecomparisons resulting in a BLAST score of 70 (or in some cases 90) orgreater that did not encode known proteins were clustered and assembledinto a consensus DNA sequence with the program “phrap” (Phil Green,University of Washington, Seattle, Wash.). One or more of the ESTs usedin the assembly was derived from a library constructed from pancreatictumor tissue. The consensus sequence obtained therefrom is hereindesignated “DNA59553”.

[3781] In light of the sequence homology between the DNA59553 sequenceand an EST sequence contained within Incyte EST no. 2944541, the ESTclone was purchased and the cDNA insert was obtained and sequenced. Thesequence of this cDNA insert is shown in FIG. 149 and is hereindesignated as DNA68871-1638.

[3782] The full length clone shown in FIG. 149 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 32-34 and ending at the stop codon found atnucleotide positions 1301-1303 (FIG. 149; SEQ ID NO: 268). The predictedpolypeptide precursor (FIG. 150, SEQ ID NO: 269) is 423 amino acidslong. PRO1461 has a calculated molecular weight of approximately 47,696daltons and an estimated pI of approximately 8.96. Additional featuresinclude: a type II transmembrane domain at about amino acids 21-40; anATP/GTP-binding site motif A (P-loop) at about amino acids 359-366; atrypsin family histidine active site at about amino acids 228-233;potential N-myristoylation sites at about amino acids 179-184, 213-218,317-322, and 360-365; and potential N-glycosylation sites at about aminoacids 75-78, 166-169 and 223-226.

[3783] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 150 (SEQ ID NO: 269), revealed significanthomology between the PRO1461 amino acid sequence Dayhoff sequence no.P_R89435. Homology was also found to exist between the PRO1461 aminoacid sequence and the following additional Dayhoff sequences:AB002134_(—)1, P_R89430, P_W22987, HEPS_MOUSE, ENTK_HUMAN, P_W22986,KAL_MOUSE, ACRO_PIG, p_R57283, and TRY7_ANOGA.

[3784] Clone DNA68871-68871 was deposited with the ATCC on Sep. 22,1998, and is assigned ATCC deposit no. 203280.

Example 79 Isolation of cDNA Clones Encoding Human PRO1410

[3785] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 98502. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (LIFESEQ®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymologv 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56451.

[3786] In light of the sequence homology between the DNA56451 sequenceand an EST sequence contained within the Incyte EST clone no. 1257046,the Incyte EST clone 125046 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 151 and is herein designated as DNA68874-1622.

[3787] Clone DNA68874-1622 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 152-154and ending at the stop codon at nucleotide positions 866-868 (FIG. 151).The predicted polypeptide precursor is 238 amino acids long (FIG. 152).The full-length PRO1410 protein shown in FIG. 152 has an estimatedmolecular weight of about 25,262 daltons and a pI of about 6.44.Analysis of the full-length PRO1410 sequence shown in FIG. 152 (SEQ IDNO: 271) evidences the presence of the following: a signal peptide fromabout amino acid 1 to about amino acid 20, a transmembrane domain fromabout amino acid 194 to about amino acid 220 and a potentialN-glycosylation site from about amino acid 132 to about amino acid 135.Clone DNA68874-1622 has been deposited with ATCC on Sep. 22, 1998 and isassigned ATCC deposit no. 203277

[3788] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 152 (SEQ ID NO: 271), evidenced significanthomology between the PRO1410 amino acid sequence and the followingDayhoff sequences: I48652, P_R76466, HSMHC3W36A_(—)2, EPB4_HUMAN,P_R14256, EPA8_MOUSE, P_R77285, P_W13569, AF000560_(—)1, and ASF1_HELAN.

Example 80 Isolation of cDNA Clones Encoding Human PRO1568

[3789] A consensus DNA sequence was assembled relative to other ESTsequences using phrap to form an assembly as described in Example 1above. The consensus sequence is designated herein “DNA54208”. Based onthe DNA54208 consensus sequence, the assembly and other information anddiscoveries provided herein, a clone including an EST in the assemblywas ordered and sequenced. The EST is Incyte 3089490. Sequencing in fullgave the sequence shown in FIG. 153.

[3790] The entire coding sequence of PRO1568 is included in FIG. 153(SEQ ID NO: 272). Clone DNA68880-1676 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 208-210 and an apparent stop codon at nucleotide positions1123-1125 of SEQ ID NO: 272. The predicted polypeptide precursor is 305amino acids long. The signal peptide, transmembrane regions,N-myristoylation and amidation sites are also indicated in FIG. 154.Clone DNA68880-1676 has been deposited with the ATCC and is assignedATCC deposit no. 203319. The full-length PRO1568 protein shown in FIG.154 has an estimated molecular weight of about 35,383 daltons and a pIof about 5.99.

[3791] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 154 (SEQ ID NO: 273), revealed sequence identitybetween the PRO1568 amino acid sequence and the following Dayhoffsequences (incorporated herein): AF089749_(—)1, AF054841_(—)1,NAG2_HUMAN, CD63_HUMAN, CD82_HUMAN, P_W05732, P_R86834, A15_HUMAN,P_W27333 and CD37_HUMAN.

Example 81 Isolation of cDNA Clones Encoding Human PRO1570

[3792] A consensus DNA sequence encoding PRO1570 was assembled relativeto other EST sequences using phrap as described in Example 1 above toform an assemby. This consensus sequence is designated herein as“DNA65415”. Based on the DNA65415 consensus sequence and otherdiscoveries and information provided herein, the clone including IncyteEST 3232285 (from a uterine/colon cancer tissue library) was purchasedand sequenced in full which gave SEQ ID NO: 274.

[3793] The entire coding sequence of PRO1570 is included in FIG. 155(SEQ ID NO: 274). Clone DNA68885-1678 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 210-212 and an apparent stop codon at nucleotide positions1506-1508 of SEQ ID NO: 274. The predicted polypeptide precursor is 432amino acids long. FIG. 275 shows a number of motifs. Clone DNA68885-1678has been deposited with the ATCC and is assigned ATCC deposit no.203311. The full-length PRO1570 protein shown in FIG. 156 has anestimated molecular weight of about 47,644 daltons and a pI ofabout5.18.

[3794] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 156 (SEQ ID NO: 275), revealed sequence identitybetween the PRO1570 amino acid sequence and the following Dayhoffsequences (incorporated herein): P_W22986, TMS2_HUMAN, HEPS_HUMAN,P_R89435, AB002134_(—)1, KAL_MOUSE, ACRO_HUMAN, GEN12917, AF045649_(—)1,and P_W34285.

Example 82 Isolation of cDNA Clones Encoding Human PRO1317

[3795] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “Consen8865”. In addition, the Consen8865consensus sequence was extended using repeated cycles of BLAST and phrapto extend the consensus sequence as far as possible using the sources ofEST sequences discussed above. The extended consensus sequence isdesignated herein as “DNA63334”. Based on the DNA63334 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1317.

[3796] PCR primers (forward and reverse) were synthesized: forward PCRprimer: CTGCTGGTGAAATCTGGCGTG (63334.f1; SEQ ID NO:278) GAG; and reversePCR primer: GTCTGGTCCTGGCTGTCCACC (63334.r1; SEQ ID NO:279) CAG.

[3797] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA63334 sequence which had the followingnucleotide sequence: hybridization probe: CATCTTGTCATGTACCTGGGAACC(63334.p1; SEQ ID NO:280) ACCACAGGGTCGCTCCACAAG.

[3798] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1317 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human hippocampaltissue.

[3799] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1317 (designated herein as DNA71166-1685[FIG. 157, SEQ ID NO: 276]; and the derived protein sequence forPRO1317.

[3800] The entire coding sequence of PRO1317 is shown in FIG. 157 (SEQID NO: 276). Clone DNA71166-1685 contains a single open reading framewith an apparent translational initiation site at nucleotide positions105-107 and an apparent stop codon at nucleotide positions 2388-2390.The predicted polypeptide precursor is 761 amino acids long and has anestimated molecular weight of about 83,574 daltons and a pI of about6.78.

[3801] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 158 (SEQ ID NO: 277), revealed significanthomology between the PRO1317 amino acid sequence and Dayhoff sequenceno. I48745. Homology was also revealed between the PRO1317 amino acidsequence the following Dayhoff sequences: I48746, GEN13418, P_W58540,P_(—)217657, MUSC1_(—)1, P_(—)471380, U73167_(—)5, HSU33920_(—)1, andGG828240_(—)1.

[3802] Clone DNA71166-1685 was deposited with the ATCC on Oct. 20, 1998,and is assigned ATCC deposit no. 203355.

Example 83 Isolation of cDNA Clones Encoding Human PRO1780

[3803] The DNA63837.init sequence was obtained as described in Example 1above and was extended using repeated cycles of BLAST and the program“phrap” (Phil Green, University of Washington, Seattle) to extend theconsensus sequence as far as possible using the sources of EST sequencesdiscussed above. The extended consensus sequence is designated herein as“DNA63837”. Based on the DNA63837 consensus sequence, oligonucleotideswere synthesized: 1) to identify by PCR a cDNA library that containedthe sequence of interest, and 2) for use as probes to isolate a clone ofthe full-length coding sequence for PRO1780.

[3804] PCR primers (forward and reverse) were synthesized: forward PCRprimer: TGCCTTTGCTCACCTACCCCAAGG (63837.f1; SEQ ID NO:283) reverse PCRprimer: TCAGGCTGGTCTCCAAAGAGAGGG (63837.r1; SEQ ID NO:284)

[3805] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA63837 sequence which had the followingnucleotide sequence: hybridization probe: CCCAAAGATGTCCACCTGGCTGC(63837.p1; SEQ ID NO:285) AAATGTGAAAATTGTGGACTGG

[3806] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1780 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from a human fetalkidney.

[3807] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1780 (designated herein as DNA71169-1709[FIG. 159, SEQ ID NO: 281]; and the derived protein sequence forPRO1780.

[3808] The entire coding sequence of PRO1780 is shown in FIG. 159 (SEQID NO: 281). Clone DNA71169-1709 contains a single open reading framewith an apparent translational initiation site at nucleotide positions68-70 and an apparent stop codon at nucleotide positions 1637-1639. Thepredicted polypeptide precursor is 523 amino acids long. The full-lengthPRO1780 protein shown in FIG. 160 has an estimated molecular weight ofabout 59,581 daltons and a pI of about 8.68. Additional features includea signal peptide sequence at about amino acids 1-19; a transmembranedomain at about amino acids 483-504; tyrosine phosphorylation sites atabout amino acids 68-74 and 425-433; N-myristoylation sites at aboutamino acids 16-21, 301-206, 370-375, and 494-499; and a leucine zipperpattern at about amino acids 493-514.

[3809] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 160 (SEQ ID NO: 282), revealed significanthomology between the PRO1780 amino acid sequence and the followingDayhoff sequences: UDA2_RABIT, CGT_HUMAN, UD11_HUMAN, P_R26153,UDB1_RAT, HSU59209_(—)1, AB010872_(—)1, UDB5_MOUSE, UDB8_HUMAN, andUD14_HUMAN.

[3810] Clone DNA71169-1709 was deposited with the ATCC on Nov. 17, 1998,and is assigned ATCC deposit no. 203467.

Example 84 Isolation of cDNA Clones Encoding Human PRO1486

[3811] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA48897”. Based on the DNA48897consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO01486.

[3812] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′AGGCAGCCACCAGCTCTGTGCTAC3′ (SEQ ID NO:288); and reverse PCRprimer 5′CAGAGAGGGAAGATGAGGAAGCCAGAG3′ (SEQ ID NO:289).

[3813] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA48897 sequence which had the followingnucleotide sequence: hybridization probe5′CTGTGCTACTGCCCTTGGACCCTGGGGACC (SEQ ID NO:290) GAGTGTCTCTGC3′.

[3814] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO01486 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from a humanadenocarcinoma cell line.

[3815] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1486 and the derived protein sequencefor PRO1486.

[3816] The entire coding sequence of PRO1486 is included in FIG. 161(SEQ ID NO: 286). Clone DNA71180-1655 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 472-474 and an apparent stop codon at nucleotide positions1087-1089 of SEQ ID NO: 286. The predicted polypeptide precursor is 205amino acids long. The signal peptide is at about amino acids 1-32 of SEQID NO: 287. Regions similar to those of C1q and an N-glycosylationi siteare located as indicated in FIG. 162. Clone DNA71180-1655 has beendeposited with the ATCC and is assigned ATCC deposit no. 203403. Thefull-length PRO1486 protein shown in FIG. 162 has anestimated molecularweight of about 21,521 daltons and a pI of about 7.07.

[3817] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 162 (SEQ ID NO: 287), revealed sequence identitybetween the PRO1486 amino acid sequence and the following Dayhoffsequences: CERB_HUMAN, CERL_RAT, GEN11893, P_R22263, CA18_HUMAN,C1QC_HUMAN, AF054891_(—)1, A57131, HUMC1 Qb2_(—)1, ACR3_MOUSE.

Example 85 Isolation of cDNA Clones Encoding Human PRO1433

[3818] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA45230. Based on the DNA45230 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1433.

[3819] PCR primers (forward and reverse) were synthesized: forward PCRprimer (45230.f1) 5′-GCTGACCTGGTTCCCATCTACTCC-3′ (SEQ ID NO:293) reversePCR primer (45230.r1) 5′-CCCACAGACACCCATGACACTTCC-3′ (SEQ ID NO:294)

[3820] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA45230 sequence which had the followingnucleotide sequence hybridization probe (45230.p1)5′-AAGAATGAATTGTACAAAGCAGGTGATCT (SEQ ID NO:295)TCGAGGAGGGCTCCTGGGGCC-3′

[3821] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1433 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human adrenal glandtissue.

[3822] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1433 (designated herein as DNA71184-1634[FIG. 163, SEQ ID NO: 291]; and the derived protein sequence forPRO1433.

[3823] The entire nucleotide sequence of DNA71184-1634 is shown in FIG.163 (SEQ ID NO: 291). Clone DNA71184-1634 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 185-187 and ending at the stop codon at nucleotide positions1349-1351 (FIG. 163). The predicted polypeptide precursor is 388 aminoacids long (FIG. 164). The full-length PRO1433 protein shown in FIG. 164has an estimated molecular weight of about 43,831 daltons and a pI ofabout 9.64. Analysis of the full-length PRO1433 sequence shown in FIG.164 (SEQ ID NO: 292) evidences the presence of the following: atransmembrane domain from about amino acid 76 to about amino acid 97,potential N-glycosylation sites from about amino acid 60 to about aminoacid 63, from about amino acid 173 to about amino acid 176 and fromabout amino acid 228 to about amino acid 231 and potentialN-myristolation sites from about amino acid 10 to about amino acid 15,from about amino acid 41 to about amino acid 46, from about amino acid84 to about amino acid 89, from about amino acid 120 to about amino acid125, from about amino acid 169 to about amino acid 174, from about aminoacid 229 to about amino acid 234, from about amino acid 240 to aboutamino acid 245, from about amino acid 318 to about amino acid 323 andfrom about amino acid 378 to about amino acid 383. Clone DNA71184-1634has been deposited with ATCC on Sep. 22, 1998 and is assigned ATCCdeposit no. 203266.

[3824] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 164 (SEQ ID NO: 292), evidenced significanthomology between the PRO1433 amino acid sequence and the followingDayhoff sequences: CELW01A11_(—)4, CEF59A1_(—)4, S67138, MTV050_(—)3,S75135 and S12411.

Example 86 Isolation of cDNA Clones Encoding Human PRO1490

[3825] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA67006. Based on the DNA67006 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1490.

[3826] PCR primers (forward and reverse) were synthesized: forward PCRprimer (67006.f1) 5′-CTTCCTCTGTGGGTGGACCATGTG-3′ (SEQ ID NO:298) reversePCR primer (67006.r1) 5′-GCCACCTCCATGCTAACGCGG-3′ (SEQ ID NO:299)

[3827] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA67006 sequence which had the followingnucleotide sequence hybridization probe (67006.p1)5′-CCAAGGTCCTCGCTAAGAAGGAGCTGCTC (SEQ ID NO:300) TACGTGCCCCTCATCG-3′

[3828] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1490 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human adrenal glandtissue.

[3829] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1490 (designated herein as DNA71213-1659[FIG. 165, SEQ ID NO: 296]; and the derived protein sequence forPRO1490.

[3830] The entire nucleotide sequence of DNA71213-1659 is shown in FIG.165 (SEQ ID NO: 296). Clone DNA71213-1659 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 272-274 and ending at the stop codon at nucleotide positions1376-1378 (FIG. 165). The predicted polypeptide precursor is 368 aminoacids long (FIG. 166). The full-length PRO1490 protein shown in FIG. 166has an estimated molecular weight of about 42,550 daltons and a pI ofabout 9.11. Analysis of the full-length PRO1490 sequence shown in FIG.166 (SEQ ID NO: 297) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 25, transmembranedomains from about amino acid 307 to about amino acid 323 and from aboutamino acid 335 to about amino acid 352 and tyrosine kinasephosphorylation sites from about amino acid 160 to about amino acid 168and from about amino acid 161 to about amino acid 168. CloneDNA71213-1659 has been deposited with ATCC on Oct. 27, 1998 and isassigned ATCC deposit no. 203401.

[3831] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 166 (SEQ ID NO: 297), evidenced significanthomology between the PRO1490 amino acid sequence and the followingIayhoff sequences: A52744_(—)1, S60478, P_R99249, P_R59712, YBP2_YEAST,S54641, CELT05H4_(—)15, CELF28B3_(—)1, CELZK40_(—)1 and YIHG_ECOLI.

Example 87 Isolation of cDNA Clones Encoding Human PRO1482

[3832] A cDNA clone (DNA71234-1651) encoding a native human PRO1482polypeptide was identified by a yeast screen, in a human adrenal glandcDNA library that preferentially represents the 5′ ends of the primarycDNA clones.

[3833] The full-length DNA71234-1651 clone shown in FIG. 167 contains asingle open reading frame with an apparent translational initiation siteat nucleotide positions 33-35 and ending at the stop codon at nucleotidepositions 462-464 (FIG. 167). The predicted polypeptide precursor is 143amino acids long (FIG. 168). The full-length PRO1482 protein shown inFIG. 168 has an estimated molecular weight of about 15,624 daltons and apI of about 9.58. Analysis of the full-length PRO1482 sequence shown inFIG. 168 (SEQ ID NO: 302) evidences the presence of the following: asignal peptide from about amino acid 1 to about amino acid 28. CloneDNA71234-1651 has been deposited with ATCC on Oct. 27, 1998 and isassigned ATCC deposit no. 203402.

[3834] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 168 (SEQ ID NO: 302), evidenced significanthomology between the PRO1482 amino acid sequence and the followingDayhoff sequences: A18267_(—)3.

Example 88 Isolation of cDNA Clones Encoding Human PRO1446

[3835] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a pancreatic isletcell library. The homology search was performed using the computerprogram BLAST or BLAST2 (Altshul et al., Methods in Enzymology266:460-480 (1996)). Those comparisons resulting in a BLAST score of 70(or in some cases 90) or greater that did not encode known proteins wereclustered and assembled into a consensus DNA sequence with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.). Theconsensus sequence obtained therefrom is herein designated DNA56514.

[3836] In light of the sequence homology between the DNA56514 sequenceand an EST sequence contained within the Incyte EST 2380344, the cloneincluding this EST was purchased and the cDNA insert was obtained andsequenced. The sequence of this cDNA insert is shown in FIG. 169 and isherein designated as DNA71277-1636.

[3837] The full length clone shown in FIG. 169 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 152-154 and ending at the stop codon found atnucleotide positions 479-481 (FIG. 169; SEQ ID NO: 303). The predictedpolypeptide precursor (FIG. 170, SEQ ID NO: 304) is 109 amino acids longwith a signal peptide at about amino acids 1-15 of SEQ ID NO: 304.PRO1446 has a calculated molecular weight of approximately 11,822daltons and an estimated pI of approximately 8.63. Clone DNA71277-1636was deposited with the ATCC on Sep. 22, 1998 and is assigned ATCCdeposit no. 203285.

[3838] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 170 (SEQ ID NO: 304), revealed sequence identitybetween the PRO1446 amino acid sequence and the following Dayhoffsequences (data incorporated herein): P53_CANFA, P53_FELCA, LRP1_HSV1F,OSU57338_(—)1, S75842, P_P93722, AF002189_(—)1, B70408, S54309 andS53365. The first in this list is further described in Kraegel, et al.,Cancer Lett., 92(2):181-186 (1995).

Example 89 Isolation of cDNA Clones Encoding Human PRO1558

[3839] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated Incyte EST cluster sequence no. 86390. This ESTcluster sequence was then compared to a variety of expressed sequencetag (EST) databases which included public EST databases (e.g., GenBank)and a proprietary EST DNA database (LIFESEQ®, Incyte Pharmaceuticals,Palo Alto, Calif.) to identify existing homologies. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “pharp” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA58842.

[3840] In light of the sequence homology between the DNA58842 sequenceand an EST sequence contained within the Incyte EST clone no. 3746964,the Incyte EST clone no. 3746964 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 171 and is herein designated as DNA71282-1668.

[3841] Clone DNA71282-1668 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 84-86 andending at the stop codon at nucleotide positions 870-872 (FIG. 171). Thepredicted polypeptide precursor is 262 amino acids long (FIG. 172). Thefull-length PRO1558 protein shown in FIG. 172 has an estimated molecularweight of about 28,809 daltons and a pI of about 8.80. Analysis of thefull-length PRO1558 sequence shown in FIG. 172 (SEQ ID NO: 306)evidences the presence of the following: a signal peptide from aboutamino acid 1 to about amino acid 25, transmembrane domains from aboutamino acid 8 to about amino acid 30 and from about amino acid 109 toabout amino acid 130, a potential N-glycosylation site from about aminoacid 190 to about amino acid 193, a tyrosine kinase phosphorylation sitefrom about amino acid 238 to about amino acid 246, potentialN-myristolation sites from about amino acid 22 to about amino acid 27,from about amino acid 28 to about amino acid 33, from about amino acid110 to about amino acid 115, from about amino acid 205 to about aminoacid 210 and from about amino acid 255 to about amino acid 260 andamidation sites from about amino acid 31 to about amino acid 34 and fromabout amino acid 39 to about amino acid 42. Clone DNA71282-1668 has beendeposited with ATCC on Oct. 6, 1998 and is assigned ATCC deposit no.203312.

[3842] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 172 (SEQ ID NO: 306), evidenced significanthomology between the PRO1558 amino acid sequence and the followingDayhoff sequences: AF075724_(—)2, MXU24657_(—)3, CAMT_EUCGU,MSU20736_(—)1, P_R29515, B70431, JC4004, CEY32B12A_(—)3, CELF53B3_(—)2and P_R13543.

Example 90 Isolation of cDNA Clones Encoding Human PRO1604

[3843] An expressed sequence tag (EST) DNA database (LIFESEQ®, IncytePharmaceuticals, Palo Alto, Calif.) was searched. Incyte EST No. 3550440was identified as having homology to HDGF. EST No. 3550440 was thencompared to various EST databases including public EST databases (e.g.GenBank), and the LIFESEQ® database, to identify homologous ESTsequences. The search was performed using the computer program BLAST orBLAST2 [MAtschul et al., Methods in Enzymology, 266:460-480 (1996)].Those comparisons resulting in a BLAST score of 70 (or in some cases,90) or greater that did not encode known proteins were clustered andassembled into consensus DNA sequences with the program “phrap” (PhilGreen, University of Washington, Seattle, Wash.). This consensussequence is designated herein “DNA67237”.

[3844] In light of the sequence homology between the DNA67237 sequenceand EST no. 3367060 from the LIFESEQ® database, the clone containingIncyte EST No. 3367060 was purchased and the cDNA insert was obtainedand sequenced to obtain the entire coding sequence of PRO1604 which isshown in FIG. 173 (SEQ ID NO: 307).

[3845] Clone DNA71286-1687 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 65-67 andan apparent stop codon at nucleotide positions 2078-2080. The predictedpolypeptide precursor is 671 amino acids long. The full-length PRO1604protein shown in FIG. 174 has an estimated molecular weight of about74,317 daltons and a pI of about 7.62. Additional features include asignal peptide at about amino acids 1-13; potential cAMP- andcGMP-dependent protein kinase phosphorylation sites at about amino acids156-159, 171-174, and 451-454; potential N-myristoylation sites at aboutamino acids 46-51, 365-370, and 367-372; and a cell attachment sequenceat about amino acids 661-663.

[3846] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 174 (SEQ ID NO: 308), revealed significanthomology between the PRO1604 amino acid sequence and Dayhoff sequenceno. P_W37483. Homology was also shown between the PRO1604 amino acidsequence and the following additional Dayhoff sequences: AF063020_(—)1,P_R66727, P_W37482, JC5661, CEC25A1_(—)11, CEU33058_(—)1, I38073,MST2_DROHY and HSATRX36_(—)1.

[3847] Clone DNA71286-1687 was deposited with the ATCC on Oct. 20, 1998,and is assigned ATCC deposit no. 203357.

Example 91 Isolation of cDNA Clones Encoding Human PRO1491

[3848] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA67202. Based on the DNA67202 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1491.

[3849] PCR primers (forward and reverse) were synthesized: forward PCRprimer (67202.f1) 5′-CAACGCAGCCGTGATAAACAAGTGG-3′ (SEQ ID NO:311)reverse PCR primer (67202.r1) 5′-GCTTGGACATGTACCAGGCCGTGG-3′ (SEQ IDNO:312)

[3850] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA67202 sequence which had the followingnucleotide sequence hybridization probe (67202.p1)5′-GGCCAGACTGATTTGCTCAATTCCTGGAA (SEQ ID NO:313) GTGATGGGGCAGATAC-3′

[3851] RNA for construction of the cDNA libraries was isolated fromhuman aortic endothelial cell tissue.

[3852] DNA sequencing of the clones isolated as described above gave thefull-ength DNA sequence for PRO1491 (designated herein as DNA71883-1660[FIG. 175, SEQ ID NO: 309]; and the derived protein sequence forPRO1491.

[3853] The entire nucleotide sequence of DNA71883-1660 is shown in FIG.175 (SEQ ID NO: 309). Clone DNA71883-1660 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 107-109 and ending at the stop codon at nucleotide positions2438-2440 (FIG. 175). The predicted polypeptide precursor is 777 aminoacids long (FIG. 176). The full-length PRO1491 protein shown in FIG. 176has an estimated molecular weight of about 89,651 daltons and a pI ofabout 7.97. Analysis of the full-length PRO1491 sequence shown in FIG.176 (SEQ ID NO: 310) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 36, potentialN-glycosylation sites from about amino acid 139 to about amino acid 142,from about amino acid 607 to about amino acid 610 and from about aminoacid 724 to about amino acid 727, a tyrosine kinase phosphorylation sitefrom about amino acid 571 to about amino acid 576 and a gram-positivecocci surface protein anchoring hexapeptide sequence from about aminoacid 32 to about amino acid 37. Clone DNA71883-1660 has been depositedwith ATCC on Nov. 17, 1998 and is assigned ATCC deposit no. 203475.

[3854] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 176 (SEQ ID NO: 310), evidenced significanthomology between the PRO1491 amino acid sequence and the followingDayhoff sequences: GGU28240_(—)1, MUSC1_(—)1, D49423, MMSEMH_(—)1,AB002329_(—)1, AF022947_(—)1, HSU33920_(—)1, HUMLUCA19_(—)1, G01856 andAF022946_(—)1.

Example 92 Isolation of cDNA Clones Encoding Human PRO1431

[3855] An expressed sequence tag (EST) DNA database (LIFESEQ®, IncytePharmaceuticals, Palo Alto, Calif.) was searched and an EST (isolatedfrom adult brain stem tissue) was identified (1370141, DNA66505) whichshowed homology to SH3. RNA for construction of cDNA libraries wasisolated from human bone marrow. Afull length cDNA corresponding to theisolated EST was isolated using an in vitro cloning technique(DNA73401-1633) in pRK5.

[3856] The cDNA libraries used to isolate the cDNA clones encoding humanPRO1431 were constructed by standard methods using commerciallyavailable reagents such as those from Invitrogen, San Diego, Calif. ThecDNA was primed with oligo dT containing a NotI site, linked with bluntto Sa1I hemnikinased adaptors, cleaved with NotI, sized appropriately bygel electrophoresis, and cloned in a defmed orientation into a suitablecloning vector (such as pRKB or pRKD; pRK5B is a precursor of pRK5D thatdoes not contain the SfiI site; see, Holmes et al., Science,253:1278-1280 (1991)) in the unique XhoI and NotI.

[3857] A CDNA clone was sequenced in entirety. The entire nucleotidesequence of DNA73401-1633 (SEQ ID NO: 314) is shown in FIG. 177. CloneDNA73401-1633 contains a single open reading frame with an apparenttranslational initiation site at about nucleotide positions 630-632 anda stop codon at about nucleotide positions 1740-1742. The predictedpolypeptide precursor encoded by DNA73401-1633 is 370 amino acids long.Clone DNA73401 (designated as DNA73402-1633) has been deposited withATCC and is assigned ATCC deposit no. 203273.

[3858] Based sequence alignment analysis (using the ALIGN computerprogram) of the full-length sequence, PRO1431 shows significant aminoacid sequence identity to SH17_HUMAN, an SH3 containing protein known asSH3P17. Additional significant identity score were found withD89164_(—)1, AF032118_(—)1, EXLP_TOBAC, YHR4_YEAST, S46992,RATP130CAS_(—)2, AF043259_(—)1, RATP130CAS_(—)1 and MYSC_ACACA.

Example 93 Isolation of cDNA Clones Encoding Human PRO1563

[3859] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA67191. Based on the DNA67191 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the fill-length coding sequence forPRO1563.

[3860] PCR primers (forward and reverse) were synthesized: forward PCRprimer (67191.f1) 5′-CCCTGAAGCTGCCAGATGGCTCC-3′ (SEQ ID NO:318) reversePCR primer (67191.r1) 5′-CTGTGCTCTTCGGTGCAGCCAGTC-3′ (SEQ ID NO:319)

[3861] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA67191 sequence which had the followingnucleotide sequence hybridization probe (67191.p1)5′-CCACAGATGTGGTACTGCCTGGGGCAGTC (SEQ ID NO:320) AGCTTGCGCTACAG-3′

[3862] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1563 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human bone marrowtissue.

[3863] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1563 (designated herein as DNA73492-1671[FIGS. 179A-B, SEQ ID NO: 316]; and the derived protein sequence forPRO1563.

[3864] The entire nucleotide sequence of DNA73492-1671 is shown in FIGS.179A-B (SEQ ID NO: 316). Clone DNA73492-1671 contains a single openreading frame with an apparent translational initiation site atnucleotide positions 419-421 and ending at the stop codon at nucleotidepositions 2930-2932 (FIGS. 179A-B). The predicted polypeptide precursoris 837 amino acids long (FIG. 180). The full-length PRO1563 proteinshown in FIG. 180 has an estimated molecular weight of about 90,167daltons and a pI of about 8.39. Analysis of the full-length PRO1563sequence shown in FIG. 180 (SEQ ID NO: 317) evidences the presence ofthe following: a signal peptide from about amino acid 1 to about aminoacid 48, a potential N-glycosylation site from about amino acid 68 toabout amino acid 71, glycosaminoglycan attachment sites from about aminoacid 188 to about amino acid 191 and from about amino acid 772 to aboutamino acid 775, a cAMP- and cGMP-dependent protein kinasephosphorylation site from about amino acid 182 to about amino acid 185,a tyrosine kinase phosphorylation site from about amino acid 730 toabout amino acid 736, potential N-myristolation sites from about aminoacid 5 to about amino acid 10, from about amino acid 19 to about aminoacid 24, from about amino acid 121 to about amino acid 126, from aboutamino acid 125 to about amino acid 130, from about amino acid 130 toabout amino acid 135, from about amino acid 147 to about amino acid 152,from about amino acid 167 to about amino acid 172, from about amino acid168 to about amino acid 173, from about amino acid 174 to about aminoacid 179, from about amino acid 323 to about amino acid 328, from aboutamino acid 352 to about amino acid 357, from about amino acid 539 toabout amino acid 544, from about amino acid 555 to about amino acid 560,from about amino acid 577 to about amino acid 582, from about amino acid679 to about amino acid 684, from about amino acid 682 to about aminoacid 687, and from about amino acid 763 to about amino acid 768,amidation sites from about amino acid 560 to about amino acid 563 andfrom about amino acid 834 to about amino acid 837, leucine zipperpattern sequences from about amino acid 17 to about amino acid 38 andfrom about amino acid 24 to about amino acid 45 and a neutral zincmetallopeptidase, zinc-binding region signature sequence from aboutamino acid 358 to about amino acid 367. Clone DNA73492-1671 has beendeposited with ATCC on Oct. 6, 1998 and is assigned ATCC deposit no.203324.

[3865] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 180 (SEQ ID NO: 317), evidenced significanthomology between the PRO1563 amino acid sequence and the followingDayhoff sequences: AB014588_(—)1, D67076_(—)1, AB001735_(—)1, P_W47028,AB002364_(—)1, P_W47029, GEN13695, P_R40823, AF005665_(—)1 andDISA_TRIGA.

Example 94 Isolation of cDNA Clones Encoding Human PRO1565

[3866] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA67183. Based on an observed homologybetween the DNA67183 consensus sequence and an EST sequence containedwithin Incyte EST clone no. 2510320, Incyte EST clone no. 2510320 waspurchased and its insert was obtained and sequenced. That insertsequence is shown in FIG. 181 and is herein designated DNA73727-1673(SEQ ID NO: 321).

[3867] The entire nucleotide sequence of DNA73727-1673 is shown in FIG.181 (SEQ ID NO: 321). Clone DNA73727-1673 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 59-61 and ending at the stop codon at nucleotide positions1010-1012 (FIG. 181). The predicted polypeptide precursor is 317 aminoacids long (FIG. 182). The full-length PRO1565 protein shown in FIG. 182has an estimated molecular weight of about 37,130 daltons and a pI ofabout 5.18. Analysis of the full-length PRO1565 sequence shown in FIG.182 (SEQ ID NO: 322) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 40, a potential typeII transmembrane domain from about amino acid 25 to about amino acid 47,potential N-glycosylation sites from about amino acid 94 to about aminoacid 97 and from about amino acid 180 to about amino acid 183,glycosaminoglycan attachment sites from about amino acid 92 to aboutamino acid 95, from about amino acid 70 to about amino acid 73, fromabout amino acid 85 to about amino acid 88, from about amino acid 133 toabout amino acid 136, from about amino acid 148 to about amino acid 151,from about amino acid 192 to about amino acid 195 and from about aminoacid 239 to about amino acid 242, potential N-myristolation sites fromabout amino acid 33 to about amino acid 38, from about ammo acid 95 toabout amino acid 100, from about amino acid 116 to about amino acid 121,from about amino acid 215 to about amino acid 220 and from about aminoacid 272 to about amino acid 277, a microbodies C-terminal targetingsignal sequence from about amino acid 315 to about amino acid 317 and acytochrome C family heme-binding site signature sequence from aboutamino acid 9 to about amino acid 14. Clone DNA73727-1673 has beendeposited with ATCC on Nov. 3, 1998 and is assigned ATCC deposit no.203459.

[3868] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 182 (SEQ ID NO: 322), evidenced significanthomology between the PRO1565 amino acid sequence and the followingDayhoff sequences: AF051425_(—)1, P_R65490, P_R65488, GRPE_STAAU,RNU31330_(—)1, ACCD_BRANA, D50558_(—)1, HUMAMYAB3_(—)1, P_W34452 andP_P50629.

Example 95 Isolation of cDNA Clones Encoding Human PRO1571

[3869] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA69559. Based on homology observedbetween the DNA69559 consensus sequence and an EST sequence containedwithin the Incyte EST clone no. 3140760, Incyte EST clone no. 3140760was purchased and the cDNA insert was obtained and sequenced. Thesequence of this cDNA insert is shown in FIG. 183 and is hereindesignated as DNA73730-1679.

[3870] Clone DNA73730-1679 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 90-92 andending at the stop codon at nucleotide positions 807-809 (FIG. 183). Thepredicted polypeptide precursor is 239 amino acids long (FIG. 184). Thefull-length PRO1571 protein shown in FIG. 184 has an estimated molecularweight of about 25,699 daltons and a pI of about 8.99. Analysis of thefull-length PRO1571 sequence shown in FIG. 184 (SEQ ID NO: 324)evidences the presence of the following: a signal peptide from aboutamino acid 1 to about amino acid 21 and transmembrane domains from aboutamino acid 82 to about amino acid 103, from about amino acid 115 toabout amino acid 141 and from about amino acid 160 to about amino acid182. Clone DNA73730-1679 has been deposited with ATCC on Oct. 6, 1998and is assigned ATCC deposit no. 203320.

[3871] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 184 (SEQ ID NO: 324), evidenced significanthomology between the PRO1571 amino acid sequence and the followingDayhoff sequences: AF072128_(—)1, AB000712_(—)1, AB000714_(—)1,AF007189_(—)1, AF000959_(—)1, AF068863_(—)1, P_W15288, PM22_HUMAN,P_R30056 and LSU46824_(—)1.

Example 96 Isolation of cDNA Clones Encoding Human PRO1572

[3872] Using the method described in Example 1 above, a consensussequence was obtained. The consensus sequence is designated herein“DNA69560”. Based on the DNA69560 consensus sequence and otherinformation provided herein, a clone including another EST (IncyteDNA3051424) from the assembly was purchased and sequenced.

[3873] The entire coding sequence of PRO1573 is included in FIG. 185(SEQ ID NO: 325). Clone DNA73734-1680 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 90-92 and an apparent stop codon at nucleotide positions873-875. The predicted polypeptide precursor is 261 amino acids long.The signal peptide is at about amino acids 1-23 and the transmembranedomains are at about amino acids 81-100, 121-141, and 173-194 of SEQ IDNO: 326. One or more of the transmembrane domains can be deleted orinactivated. The locations of a N-glycosylation site, N-myristoylationsites, a tyrosine kinase phosphorylation site and a prokaryotic membranelipoprotein lipid attachment site are indicated in FIG. 186. CloneDNA73734-1680 has been deposited with the ATCC and is assigned ATCCdeposit no. 203363. The full-length PRO1572 protein shown in FIG. 186has an estimated molecular weight of about 27,856 daltons and a pI ofabout 8.5.

[3874] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 186 (SEQ ID NO: 326), revealed sequence identitybetween the PRO1572 amino acid sequence and the following Dayhoffsequences (incorporated herein): AF072127_(—)1, HSU89916_(—)1,AB000713_(—)1, AB000714_(—)1, AB000712_(—)1, AF000959_(—)1,AF072128_(—)1, AF068863_(—)1, P_W29881, and P_W58869.

Example 97 Isolation of cDNA Clones Encoding Human PRO1573

[3875] EST 3628990 was identified in an Incyte Database, (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) and extended in a comparisonto other sequences in databases to form an assembly. The alignmentsearch was performed using the computer program BLAST or BLAST2[Altschul et al., Methods in Enzymology, 266:460-480 (1996)] as acomparison of the ECD protein sequences to a 6 frame translation of theEST sequences. Those comparisons resulting in a BLAST score of 70 (or insome cases, 90) or greater that did not encode known proteins wereclustered and assembled into consensus DNA sequences with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.). Theconsensus sequence is designated herein “DNA69561”.

[3876] Based on the DNA69561 consensus sequence and other informationprovided herein, a clone including another EST (Incyte DNA3752657) fromthe assembly was purchased and sequenced. This clone came from a breasttumor tissue library.

[3877] The entire coding sequence of PRO1573 is included in FIG. 187(SEQ ID NO: 327). Clone DNA73735-1681 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 97-99 and an apparent stop codon at nucleotide positions772-774. The predicted polypeptide precursor is 225 amino acids long.The signal peptide is at about amino acids 1-17 and the transmembranedomains are at about amino acids 82-101, 118-145, and 164-188 of SEQ IDNO: 328. One or more of the transmembrane domains can be deleted orinactivated. A phosphorylation site, amidation site, andN-myristoylation sites are shown in FIG. 188. Clone DNA73735-1681 hasbeen deposited with ATCC and is assigned ATCC deposit no. 203356. Thefull-length PRO1573 protein shown in FIG. 188 has an estimated molecularweight of about 24,845 daltons and a pI of about 9.07.

[3878] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 188 (SEQ ID NO: 328), revealed sequence identitybetween the PRO1573 amino acid sequence and the following Dayhoffsequences (incorporated herein): AF007189_(—)1, AB000714_(—)1,AB000713_(—)1, AB000712_(—)1, A39484, AF000959_(—)1, AF07217_,AF072128_(—)1, AF068863_(—)1 and AF077739_(—)1.

Example 98 Isolation of cDNA Clones Encoding Human PRO1488

[3879] An expressed sequence tag (EST) DNA database (LIFESEQ®, IncytePharmaceuticals, Palo Alto, Calif.) was searched and EST No. 3639112H1was identified as having homology to CPE-R. EST No. 3639112H1 isdesignated herein as “DNA69562”. EST clone 3639112H1, which was derivedfrom a lung tissue library of a 20-week old fetus who died from Patau'ssyndrome, was purchased and the cDNA insert was obtained and sequencedin its entirety. The entire nucleotide sequence of PRO1488 is shown inFIG. 189 (SEQ ID NO: 329), and is designated herein as DNA73736-1657.DNA73736-1657 contains a single open reading frame with an apparenttranslational initiation site at nucleotide positions 6-8 and a stopcodon at nucleotide positions 666-668 (FIG. 189; SEQ ID NO: 329). Thepredicted polypeptide precursor is 220 amino acids long.

[3880] The full-length PRO1488 protein shown in FIG. 190 has anestimated molecular weight of about 23,292 daltons and a pI of about8.43. Four transmembrane domains have been identified as being locatedat about amino acid positions 8-30, 82-102, 121-140, and 166-186.

[3881] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 190 (SEQ ID NO: 330), revealed significanthomology between the PRO1488 amino acid sequence and Dayhoff sequenceAB000712_(—)1. Homology was also found between the PRO1488 amino acidsequence andthe following additional Dayhoffsequences: AB000714_(—)1,AF007189_(—)1, AF000959_(—)1, P_W63697, MMU82758_(—)1, AF072127_(—)1,AF072128_(—)1, HSU89916_(—)1, AF068863_(—)1, CEAF000418_(—)1, andAF077739_(—)1.

[3882] Clone DNA73736-1657 was deposited with the ATCC on Nov. 17, 1998,and is assigned ATCC deposit no. 203466.

Example 99 Isolation of cDNA Clones Encoding Human PRO1489

[3883] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA69563. Based upon an observed sequencesimilarity between the DNA69563 consensus sequence and an EST sequencecontained within the Incyte EST clone no. 3376608, Incyte EST clone no.3376608 was purchased and its insert obtained and sequenced. That insertis herein designated DNA73737-1658.

[3884] The entire nucleotide sequence of DNA73737-1658 is shown in FIG.191 (SEQ ID NO: 331). Clone DNA73737-1658 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 264-266 and ending at the stop codon at nucleotide positions783-785 (FIG. 191). The predicted polypeptide precursor is 173 aminoacids long (FIG. 192). The full-length PRO1489 protein shown in FIG. 192has an estimated molecular weight of about 18,938 daltons and a pI ofabout 9.99. Analysis of the full-length PRO1489 sequence shown in FIG.192 (SEQ ID NO: 332) evidences the presence of the following:transmembrane domains from about amino acid 31 to about amino acid 51,from about amino acid 71 to about amino acid 90 and from about aminoacid 112 to about amino acid 133 and a potential N-glycosylation sitefrom about amino acid 161 to about amino acid 164. Clone DNA73737-1658has been deposited with ATCC on Oct. 27, 1998 and is assigned ATCCdeposit no. 203412.

[3885] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 192 (SEQ ID NO: 332), evidenced significanthomology between the PRO1489 amino acid sequence and the followingDayhoff sequences: AF007189_(—)1, AB000712_(—)1, AF000959_(—)1,MMU82758_(—)1, AF035814_(—)1, AF072127_(—)1, AF072128_(—)1,HSU89916_(—)1, AF068863_(—)1 and PPU50051_(—)1.

Example 100 Isolation of cDNA Clones Encoding Human PRO1474

[3886] An expressed sequence tag (EST) DNA database (LIFESEQ®, IncytePharmaceuticals, Palo Alto, Calif.) was searched and an EST wasidentified. This EST showed homology to pancreatic secretory trypsininhibitor.

[3887] The clone which included this EST was purchased from Incyte (itcame from a uterine cervical tissue if library) and sequenced in full toreveal the nucleic acid of SEQ ID NO: 333, which encodes PRO1474.

[3888] The entire nucleotide sequence of PRO1474 is shown in FIG. 193(SEQ ID NO: 333). Clone DNA73739-1645 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 45-47 and a stop codon at nucleotide positions 300-302 (FIG.193; SEQ ID NO: 333). The predicted polypeptide precursor is 85 aminoacids long. As indicated in FIG. 194, the Kazal serine proteaseinhibitor family signature begins at about amino acid 45 of SEQ ID NO:334. Also indicated in FIG. 194 is a region conserved in integrin alphachains (beginning at about amino acid 32 of SEQ ID NO: 334). CloneDNA73739-1645 has been deposited with the ATCC and is assigned ATCCdeposit no. 203270. The full-length PRO1474 protein shown in FIG. 194has an estimated molecular weight of about 9,232 daltons and a pI ofabout 7.94.

[3889] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 194 (SEQ ID NO: 334), revealed sequence identitybetween the PRO1474 amino acid sequence and the following Dayhoffsequences (all ovomucoids, data incorporated herein by reference):IOVO_FRAER, IOVO_FRAAF, IOVO_FRACO, IOVO_CYRMO, IOVO_STRCA, H61492,C61589, IOVO_POLPL, D61589, and IOVO_TURME.

Example 101 Isolation of cDNA Clones Encoding Human PRO1508

[3890] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated Incyte Cluster No. 34523, also referred herein as“DNA10047”. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public and privateEST databases (e.g., GenBank and (LIFESEQ®) to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated “DNA55723”.

[3891] In light of the sequence homology between the DNA55723 sequence asequence contained within Incyte EST no. 2989064, the EST clone 2989064was purchased and the cDNA insert was obtained and sequenced in itsentirety. The sequence of this cDNA insert is shown in FIG. 195 and isherein designated as “DNA73742-1662”.

[3892] The full length clone shown in FIG. 195 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 70 to 72 and ending at the stop codon found atnucleotide positions 514 to 516 (FIG. 195; SEQ ID NO: 335). Thepredicted polypeptide precursor (FIG. 196, SEQ ID NO: 335) is 148 aminoacids long. Other features of the PRO1508 protein include: a signalsequence at about amino acids 1-30; a tyrosine kinase phosphorylationmotif at about amino acids 96-103; and N-myristoylation motifs at aboutamino acids 27-32, 28-33, and 140-145. PRO1508 has a calculatedmolecular weight of approximately 17,183 daltons and an estimated pI ofapproximately 8.77. Clone DNA73742-1662 was deposited with the ATCC onOct. 6, 1998 and is assigned ATCC deposit no. 203316.

[3893] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 196 (SEQ ID NO: 336), revealed some homologybetween the PRO1508 amino acid sequence and the following Dayhoffsequences: HSAJ3728_(—)1; P_R74962; P_R74941; AF053074_(—)1; F69515;S20706; RPB1_PLAFD; A20587_(—)1; A51861_(—)1; and S75947.

Example 102 Isolation of cDNA Clones Encoding Human PRO1555

[3894] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST cluster no. 521, and also referred to herein as“DNA10316”. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and the LIFESEQ® database to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated “DNA56374”.

[3895] In light of the sequence homology between the DNA56374 sequenceand an EST sequence contained within Incyte EST no.2855769, ESTno.2855769 was purchased and the cDNA insert was obtained and sequenced.EST no. 2855769 was derived from a library constructed from femalebreast fat tissue. The sequence of this cDNA insert is shown in FIG. 197and is herein designated as DNA73744-1665.

[3896] The full length clone shown in FIG. 197 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 90 to 92 and ending at the stop codon found atnucleotide positions 828 to 830 (FIG. 197; SEQ ID NO: 337). Thepredicted polypeptide precursor (FIG. 198, SEQ ID NO: 338) is 246 aminoacids long. PRO1555 has a calculated molecular weight of approximately26,261 daltons and an estimated pI of approximately 5.65. Additionalfeatures include: a signal peptide at about amino acids 1-31;transmembrane domains at about amino acids 11-31 and 195-217; apotential N-glycosylation site at about amino acids 111-114; potentialcasein kinase II phosphorylation sites at about amino acids 2-5, 98-101,and 191-194; and potential N-myristoylation sites at about amino acids146-151, and 192-197.

[3897] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 198 (SEQ ID NO: 338), revealed some homologybetween the PRO1555 amino acid sequence and the following Dayhoffsequences: YKA4_CAEEL, AB014541_(—)1, HVSX99518_(—)2, SSU63019_(—)1,GEN14286, MMU68267_(—)1, XP2_XENLA, ICP4_HSV11, P_W40200, andAE001360_(—)1.

[3898] Clone DNA73744-1665 was deposited with the ATCC on Oct. 6, 1998,and is assigned ATCC deposit no. 203322.

Example 103 Isolation of cDNA Clones Encoding Human PRO1485

[3899] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein “DNA44791”. Based on the DNA44791consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1485.

[3900] PCR primers (2 forward and 2 reverse) were synthesized:

[3901] forward PCR primer 1: 5′CCCTCCAAGGATGACAAAGGCGC 3′ (SEQ ID NO:341);

[3902] forward PCR primer 2: 5′GGTCAGCAGCTTTCTTGCCCTAAATCAGG 3′ (SEQ IDNO: 342);

[3903] reverse PCR primer 1: 5′ATCTCAGGCGGCATCCTGTCAGCC 3′ (SEQ ID NO:343); and

[3904] reverse PCR primer 2: 5′GTGGATGCCTGCAAGAAGGTTGGG 3′ (SEQ ID NO:344).

[3905] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA44791 sequence which had the followingnucleotide sequence: hybridization probe5′AGCTTTCTTGCCCTAAATCAGGCCAGCCTCATCAGTCGCTGTGAC 3′ (SEQ ID NO: 345)

[3906] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1485 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human testis.

[3907] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1485 (designated herein as DNA73746-1654[FIG. 199, SEQ ID NO: 339]; and the derived protein sequence forPRO1485.

[3908] The entire coding sequence of PRO1485 is shown in FIG. 199 (SEQID NO: 339). Clone DNA73746-1654 contains a single open reading framewith an apparent translational initiation site at nucleotide positions151-153 and an apparent stop codon at nucleotide positions 595-597 ofSEQ ID NO: 339. The predicted polypeptide precursor is 148 amino acidslong. The signal peptide is at about amino acids 1-18 of SEQ ID NO: 340.The lysozyme C signature, CAAX box, and an N-gycosylation site are shownin FIG. 200. Clone DNA73746-1654 has been deposited with ATCC and isassigned ATCC deposit no. 203411. The full-length PRO1485 protein shownin FIG. 200 has an estimated molecular weight of about 16,896 daltonsand a pI of about 6.05.

[3909] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 200 (SEQ ID NO: 340), revealed sequence identitybetween the PRO1485 amino acid sequence and the following Dayhoffsequences: LYC_PHACO, P_R76684, 2HFL_Y, JC2144, JC5544, JC5555, JC5369,LYC2_PIG, P_R12113, and JC5380.

Example 104 Isolation of cDNA Clones Encoding Human PRO1564

[3910] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA67213. Based on the DNA67213 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1564.

[3911] PCR primers (forward and reverse) were synthesized: forward PCRprimer (67213.f1) 5′-GGAGAGGTGGTGGCCATGGACAG-3′ (SEQ ID NO:348) reversePCR primer (67213.r1) 5′-CTGTCACTGCAAGGAGCCAACACC-3′ (SEQ ID NO:349)

[3912] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA67213 sequence which had the followingnucleotide sequence hybridization probe (67213.p1)5′-TATGTCGCTGCGAGGTGGTGAAAACCTCGAACTGTCTTTCAAGGC-3′ (SEQ ID NO:350)

[3913] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1564 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human breastcarcinoma tissue.

[3914] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1564 (designated herein as DNA73760-1672[FIG. 201, SEQ ID NO: 346]; and the derived protein sequence forPRO1564.

[3915] The entire nucleotide sequence of DNA73760-1672 is shown in FIG.201 (SEQ ID NO: 346). Clone DNA73760-1672 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 462-464 and ending at the stop codon at nucleotide positions2379-2381 (FIG. 201). The predicted polypeptide precursor is 639 aminoacids long (FIG. 202). The full-length PRO1564 protein shown in FIG. 202has an estimated molecular weight of about 73,063 daltons and a pI ofabout 6.84. Analysis of the full-length PRO1564 sequence shown in FIG.202 (SEQ ID NO: 347) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 28, a trasnrnembranedomain from about amino acid 11 to about amino acid 36, potentialN-glycosylation sites from about amino acid 107 to about amino acid 110and from about amino acid 574 to about amino acid 577, a tyrosine kinasephosphorylation site from about amino acid 50 to about amino acid 57,potential N-myristolation sites from about amino acid 158 to about aminoacid 163, from about amino acid 236 to about amino acid 241, from aboutamino acid 262 to about amino acid 267, from about amino acid 270 toabout amino acid 275, from about amino acid 380 to about amino acid 385and from about amino acid 513 to about amino acid 518, an amidation sitefrom about amino acid 110 to about amino acid 113 and a prokaryoticmembrane lipoprotein lipid attachment site from about amino acid 15 toabout amino acid 25. Clone DNA73760-1672 has been deposited with ATCC onOct. 6, 1998 and is assigned ATCC deposit no.203314.

[3916] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 202 (SEQ ID NO: 347), evidenced significanthomology between the PRO1564 amino acid sequence and the followingDayhoff sequences: MMU73819_(—)1, HSY08564_(—)1, P_W34470, P_R66402,PAGT_HUMAN, CEGLY5B_(—)1, CEGLY6A_(—)1, CEGLY6B_(—)1, AP000006_(—)308and E69322.

Example 105 Isolation of cDNA Clones Encoding Human PRO1755

[3917] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST Cluster No. 141872. This EST cluster sequencewas then compared to a variety of ESTs from the databases listed aboveto identify existing homologies. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzymology 266:460-480 (1996)). Those comparisons resulting in a BLASTscore of 70 (or in some cases 90) or greater that did not encode knownproteins were clustered and assembled into a consensus DNA sequence withthe program “phrap” (Phil Green, University of Washington, Seattle,Wash.). The consensus sequence obtained therefrom is herein designated“DNA55731”.

[3918] In light of the sequence homology between the DNA55731 sequenceand a sequence contained within Incyte EST no. 257323, the EST clone waspurchased and the cDNA insert was obtained and sequenced. Incyte clone257323 was derived from a library constructed using RNA isolated fromthe hNT2 cell line (Stratagene library no. STR9372310), which wasderived from a human teratocarcinoma that exhibited propertiescharacteristic of a committed neuronal precursor at an early stage ofdevelopment. The sequence of this cDNA insert is shown in FIG. 203 andis herein designated “DNA76396-1698”. Alternatively, the DNA76396-1698sequence can be obtained by preparing oligonucleotide probes and primersand isolating the sequence from an appropriate library (e.g.STR9372310).

[3919] The full length clone shown in FIG. 203 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 58 to 60 and ending at the stop codon found atnucleotide positions 886 to 888 (FIG. 203; SEQ ID NO: 351). Thepredicted polypeptide precursor (FIG. 204, SEQ ID NO: 352) is 276 aminoacids long. PRO1755 has a calculated molecular weight of approximately29,426 daltons and an estimated pI of approximately 9.40. Additionalfeatures include: a signal peptide sequence at about amino acids 1-31; atransmembrane domain at about amino acids 178-198; a cAMP andcGMP-dependent protein kinase phosphorylation site at about amino acids210-213; potential N-myristoylation sites at about amino acids 117-122,154-149, and 214-219; and a cell attachment sequence at about aminoacids 149-151.

[3920] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 204 (SEQ ID NO: 352), revealed some homologybetween the PRO1755 amino acid sequence and the following Dayhoffsequences: APG-BRANA, P_R37743, NAU88587_(—)1, YHL1_EBV, P_W31855, CET10B10_(—)4, AF039404_(—)1, PRP1_HUMAN, AF038575_(—)1, and AF053091_(—)1.

[3921] Clone DNA76396-1698 was deposited with the ATCC on Nov. 17, 1998,and is assigned ATCC deposit no. 203471.

Example 106 Isolation of cDNA Clones Encoding Human PRO1757

[3922] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of three EST sequences from the Incyte database,designated Incyte EST clones no. 2007947, 2014962 and 1912034. These ESTsequences were then clustered and assembled into a consensus DNAsequence with the program “phrap” (Phil Green, University of Washington,Seattle, Wash.). The consensus sequence obtained therefrom is hereindesignated as DNA56054.

[3923] In light of the sequence homology between the DNA56054 sequenceand a sequence contained within the Incyte EST clone no. 2007947, theIncyte EST clone no. 2007947 was purchased and the cDNA insert wasobtained and sequenced. The sequence of this cDNA insert is shown inFIG. 205 and is herein designated as DNA76398-1699.

[3924] Clone DNA76398-1699 contains a single open reading frame with anapparent translational initiation site at nucleotide positions 59-61 andending at the stop codon at nucleotide positions 422-424 (FIG. 205). Thepredicted polypeptide precursor is 121 amino acids long (FIG. 206). Thefull-length PRO1757 protein shown in FIG. 206 has an estimated molecularweight of about 12,073 daltons and a pI of about 4.11. Analysis of thefull-length PRO1757 sequence shown in FIG. 206 (SEQ ID NO: 354)evidences the presence of the following: a signal peptide from aboutamino acid 1 to about amino acid 19, a transmembrane domain from aboutamino acid 91 to about amino acid 110, a glycosaminoglycan attachmentsite from about amino acid 44 to about amino acid 47, a cAMP- andcGMP-dependent protein kinase phosphorylation site from about amino acid116 to about amino acid 119 and a potential N-myristolation site fromabout amino acid 91 to about amino acid 96. Clone DNA76398-1699 has beendeposited with ATCC on Nov. 17, 1998 and is assigned ATCC deposit no.203474.

[3925] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-ength sequenceshown in FIG. 206 (SEQ ID NO: 354), evidenced significant homologybetween the PRO1757 amino acid sequence and the following Dayhoffsequences: JQ0964, COLL_HSVS7, HSU70136_(—)1, AF003473_(—)1,D89728_(—)1, MTF1_MOUSE, AF029777_(—)1, HSU88153_and P_W05321.

Example 107 Isolation of cDNA Clones Encoding Human PRO1758

[3926] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST cluster No. 20926. This EST cluster sequencewas then compared to a variety of expressed sequence tag (EST) from thedatabases mentioned above, to identify existing homologies. The homologysearch was performed using the computer program BLAST or BLAST2 (Altshulet al., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA56260.

[3927] In light of the sequence homology between the DNA56260 sequenceand a sequence contained within EST no. 2936330 from the LIFESEQ®database, the EST clone, which originated from a library constructedfrom thymus tissue of a fetus that died from anencephalus, was purchasedand the cDNA insert was obtained and sequenced. The sequence of thiscDNA insert is shown in FIG. 207 and is herein designated asDNA76399-1700.

[3928] The full length clone shown in FIG. 207 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 78 to 80 and ending at the stop codon found atnucleotide positions 549-551 (FIG. 207; SEQ ID NO: 355). The predictedpolypeptide precursor (FIG. 208, SEQ ID NO: 356) is 157 amino acidslong. PRO1758 has a calculated molecular weight of approximately 17,681daltons and an estimated pI of approximately 7.65. Additional featuresinclude: a signal peptide from about amino acids 1-15; a potentialN-glycosylation site at about amino acids 24-27; a cAMP- andcGMP-dependent protein kinase phosphorylation site at about amino acids27-30; a casein kinase II phosphorylation site at about amino acids60-63; potential N-myristoylation sites at about amino acids 17-22,50-55, 129-134, and 133-138; a cell sequence at about amino acids153-155; and a cytochrome c family heme-binding site signature at aboutamino acids 18-23.

[3929] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 208 (SEQ ID NO: 356), revealed significanthomology between the PRO1758 amino acid sequence and Dayhoff sequence noAC005328_(—)2. Homology was also found between the PRO1758 amino acidsequence and Dayhoff sequence no. CELC46F2_(—)1.

[3930] Clone DNA76399-1700 was deposited with the ATCC on Nov. 17, 1998and is assigned ATCC deposit no. 203472.

Example 108 Isolation of cDNA Clones Encoding Human PRO1575

[3931] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is designated herein as “DNA35699”. Based on the DNA35699consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1575.

[3932] PCR primers (forward and reverse) were synthesized: forward PCRprimers: CCAGCAGTGCCCATACTCCATAGC (35699.f1; SEQ ID NO:359);TGACGAGTGGGATACACTGC (35699.f2; SEQ ID NO:360) reverse PCR primer:GCTCTACGGAAACTTCTGCTGTGG (35699.r1; SEQ ID NO:361)

[3933] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA35699 sequence which had the followingnucleotide sequence: hybridization probe:ATTCCCAGGCGTGTCATTTGGGATCAGCACTGATTCTGAGGTTCTGACAC (35699.p1; SEQ IDNO:362)

[3934] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1575 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human pancreatictissue.

[3935] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1575 (designated herein as DNA76401-1683[FIG. 209, SEQ ID NO: 357]; and the derived protein sequence forPRO1575.

[3936] The entire coding sequence of PRO1575 is shown in FIG. 209 (SEQID NO: 357). Clone DNA76401-1683 contains a single open reading framewith an apparent translational initiation site at nucleotide positions22-24 and an apparent stop codon at nucleotide positions 841-843. Thepredicted polypeptide precursor is 273 amino acids long. The full-lengthPRO1575 protein shown in FIG. 210 has an estimated molecular weight ofabout 30,480 daltons and a pI of about 4.60. Additional featuresinclude: a signal peptide at about amino acids 1-20; a transmembranedomain at about amino acids 143-162; a potential N-glycosylation site atabout amino acids 100-103; and potential N-myristoylation sites at aboutamino acids 84-89, 103-108, 154-159, and 201-206.

[3937] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 210 (SEQ ID NO: 358), revealed significanthomology between the PRO1575 amino acid sequence and Dayhoff sequenceA12005_(—)1. Homology was also revealed between the PRO1575 amino acidsequence and the following additional Dayhoff sequences: P_P80615;P_R25297; P_R51696; A47300; PDI_DROME; P_R49829; P_R63807;DMALPADAP_(—)1; and DRZNF6_(—)1.

[3938] Clone DNA76401-1683 was deposited with the ATCC on Oct. 20, 1998,and is assigned ATCC deposit no. 203360.

Example 109 Isolation of cDNA Clones Encoding Human PRO1787

[3939] A consensus DNA sequence was assembled relative to other ESTsequences using phrap to form an assembly as described in Example 1above. This consensus sequence is designated herein “DNA45123”. Based onhomology of DNA45123 to incyte EST 3618549 identified in the assembly,as well as other discoveries and information provided herein, the cloneincluding this EST was purchased and sequenced. DNA sequencing of theclone gave the full-length DNA sequence for PRO1787 and the derivedprotein sequence for PRO1787.

[3940] The entire coding sequence of PRO1787 is included in FIG. 211(SEQ ID NO: 363). Clone DNA76510-2504 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 163-165 and an apparent stop codon at nucleotide positions970-972 of SEQ ID NO: 363. The approximate locations of the signalpeptide, transmembrane domain, N-glycosylation sites, N-myristoylationsites and a kinase phosphorylation site are indicated in FIG. 212. Thepredicted polypeptide precursor is 269 amino acids long. CloneDNA76510-2504 has been deposited with the ATCC and is assigned ATCCdeposit no. 203477. The full-length PRO1787 protein shown in FIG. 212has an estimated molecular weight of about 29,082 daltons and a pI ofabout 9.02.

[3941] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 212 (SEQ ID NO: 364), revealed sequence identitybetween the PRO1787 amino acid sequence and the following Dayhoffsequences: MYP0_RAT, MYP0_HUMAN, MYP0_BOVIN, GEN12838, HSSCN2B2_(—)1,AF007783_(—)1, HSU90716_(—)1, P_W42015, XLU43330_(—)1 and AF060231_(—)1.

Example 110 Isolation of cDNA Clones Encoding Human PRO1781

[3942] Initial DNA sequences referred to herein as DNA58070 and DNA56340were identified using a yeast screen, in a human SK-Lu-1 adenocarcinomacell line cDNA library that preferentially represents the 5′ ends of theprimary cDNA clones. These sequences were clustered and assembled into aconsensus DNA sequence using the computer program “phrap” (Phil Green,University of Washington, Seattle, Wash.). The consensus sequence isdesignated herein as “DNA59575”.

[3943] Based on the DNA59575 consensus sequence, the followingoligonucleotides, were synthesized for use as probes to isolate a cloneof the full-length coding sequence for PRO1781 from a human fetal lungcDNA library: TGGAAAAGAAGTCTGGTCAGAAGGTTTAGG (SEQ ID NO: 367),CATTTGGCTTCATTCTCCTGCTCTG (SEQ ID NO: 368), AAAACCTCAGAACAACTCATTTTGCACC(SEQ ID NO: 369) and GTCTCACCATGGTTGCTCTTGCCAAATTGTGGGAAGCAGGG (SEQ IDNO: 370).

[3944] The full length DNA76522-2500 clone shown in FIG. 213 contained asingle open reading frame with an apparent translational initiation siteat nucleotide positions 21 to 23 and ending at the stop codon found atnucleotide positions 1141-1143 (FIG. 213; SEQ ID NO: 365). The predictedpolypeptide precursor (FIG. 214, SEQ ID NO: 366) is 373 amino acidslong. PRO1781 has a calculated molecular weight of approximately 41,221daltons and an estimated pI of approximately 8.54. Additional featuresinclude: apossible signal peptide at about amino acids 1-19; atransmembrane domain at about amino acids 39-60; a tyrosinephosphorylation site at about amino acids 228-236; potentialN-myristoylation sites at about amino acids 16-21, 17-22, 43-48, 45-50,47-52, 49-54, 53-58, 58-63, 59-64, 62-67, 126-131, and 142-147;amidation sites at about amino acids 22-25 and 280-283; and aprokaryotic membrane lipoprotein lipid attachment site at about aminoacids 12-22.

[3945] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 214 (SEQ ID NO: 366), revealed some homologybetween the PRO1781 amino acid sequence and the following Dayhoffsequences: CEY4510D_(—)5, AP000001_(—)146, P_R10676, DAC_STRSQ,CEC40H5_(—)5, P_R35204, KPU58495_(—)1, KPN16781_(—)1, AF010403_(—)1, andAF056116_(—)14.

[3946] Clone DNA76522-2500 was deposited with the ATCC on Nov. 17, 1998,and is assigned ATCC deposit no. 203469.

Example 111 Isolation of cDNA Clones Encoding Human PRO1556

[3947] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated EST Cluster No. 103158, and also referred to hereinas “DNA10398”. This EST cluster sequence was then compared to a varietyof expressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and the LIFESEQ® database, to identifyexisting homologies. The homology search was performed using thecomputer program BLAST or BLAST2 (Altshul et al., Methods in Enzymology266:460-480 (1996)). Those comparisons resulting in a BLAST score of 70(or in some cases 90) or greater that did not encode known proteins wereclustered and assembled into a consensus DNA sequence with the program“phrap” (Phil Green, University of Washington, Seattle, Wash.). Theconsensus sequence obtained therefrom is herein designated DNA56417.

[3948] In light of the sequence homology between the DNA56417 sequenceand a sequence contained within Incyte EST no. 959332, EST no. 959332was purchased and the cDNA insert was obtained and sequenced. Thesequence of this cDNA insert is shown in FIG. 215 and is hereindesignated as DNA76529-1666.

[3949] The full length clone shown in FIG. 215 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 85 to 87 and ending at the stop codon found atnucleotide positions 892 to 894 (FIG. 215; SEQ ID NO: 371). Thepredicted polypeptide precursor (FIG. 216, SEQ ID NO: 372) is 269 aminoacids long. PRO1556 has a calculated molecular weight of approximately28,004 daltons and an estimated pI of approximately 5.80. Additionalfeatures include: a signal peptide sequence at about amino acids 1-24;transmembrane domains at about amino acids 11-25 and 226-243; apotential N-glycosylation site at about amino acids 182-185, potentialcAMP- and cGMP-dependent protein kinase phosphorylation site at aboutamino acids 70-73; and potential N-myristoylation sites at about aminoacids 29-34, 35-39, 117-122, 121-126, 125-130, 154-159, 166-171,241-246, 246-251, 247-252, 249-254, 250-255, 251-256, 252-257, 253-258,254-259, 255-260, 256-261, 257-262, and 259-264.

[3950] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 216 (SEQ ID NO: 372), revealed some homologybetween the PRO1556 amino acid sequence and the following Dayhoffsequences: T8F5_(—)4, R23B_MOUSE, CANS_HUMAN, P_W41640, DSU51091_(—)1,TP2B_CHICK, DVU20660_(—)1, S43296, P_R23962, and BRN1_HUMAN.

[3951] Clone DNA76529-1666 was deposited with the ATCC on Oct. 6, 1998,and is assigned ATCC deposit no. 203315.

Example 112 Isolation of cDNA Clones Encoding Human PRO1759

[3952] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase, designated DNA10571. This EST cluster sequence was thencompared to a variety of expressed sequence tag (EST) databases whichincluded public EST databases (e.g., GenBank) and aproprietary EST DNAdatabase (LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.) toidentify existing homologies. One or more of the ESTs was derived frompooled eosinophils of allergic asthmatic patients. The homology searchwas performed using the computer program BLAST or BLAST2 (Altshul etal., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated DNA57313.

[3953] In light of the sequence homology between the DNA57313 sequenceand the Incyte EST 2434255, the clone including this EST was purchasedand the cDNA insert was obtained and sequenced. The sequence of thiscDNA insert is shown in FIG. 217 and is herein designated asDNA76531-1701.

[3954] The full length clone shown in FIG. 217 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 125-127 and ending at the stop codon found atnucleotide positions 1475-1477 (FIG. 217; SEQ ID NO: 373). Theapproximate locations of the signal peptide and transmembrane domainsare indicated in FIG. 218, whereas the approximate locations forN-myristoylation sites, a lipid attachment site, an arnidation site anda kinase phosphorylation site are indicated in FIG. 218. The predictedpolypeptide precursor (FIG. 218, SEQ ID NO: 374) is 450 amino acidslong. PRO1759 has a calculated molecular weight of approximately 49,765daltons and an estimated pI of approximately 8.14. Clone DNA76531-1701was deposited with the ATCC on Nov. 17, 1998 and is assigned ATCCdeposit no. 203465.

[3955] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 218 (SEQ ID NO: 374), revealed sequence identitybetween the PRO1759 amino acid sequence and the following Dayhoffsequences: OPDE_PSEAE, TH11_TRYBB, S67684, RGT2_YEAST, S68362,ATSUGTRPR_(—)1, P_W17836 (Patent application WO9715668-A2), F69587,A48076, and A45611.

Example 113 Isolation of cDNA Clones Encoding Human PRO1760

[3956] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the Incytedatabase. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. One or more of the ESTs was derived from a prostate tumorlibrary. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). The consensussequence obtained therefrom is herein designated DNA58798.

[3957] In light of the sequence homology between DNA58798 sequenceandthe Incyte EST 3358745, the clone including this EST was purchasedand the cDNA insert was obtained and sequenced. The sequence of thiscDNA insert is shown in FIG. 219 and is herein designated asDNA76532-1702.

[3958] The full length clone shown in FIG. 219 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 60-62 and ending at the stop codon found atnucleotide positions 624-626 (FIG. 219; SEQ ID NO: 375). The predictedpolypeptide precursor (FIG. 220, SEQ ID NO: 376) is 188 amino acidslong. Motifs are further indicated in FIG. 220. PRO1760 has a calculatedmolecular weight of approximately 21,042 daltons and an estimated pI ofapproximately 5.36. Clone DNA76532-1702 was deposited with the ATCC onNov. 17, 1998 and is assigned ATCC deposit no. 203473.

[3959] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 220 (SEQ ID NO: 376), revealed sequence identitybetween the PRO1760 amino acid sequence and the following Dayhoffsequences: CELT07F12_(—)2, T22J18_(—)16, ATF1C12_(—)3, APE3_YEAST,P_W22471, SAU56908_(—)1, SCPA_STRPY, ATAC00423817, SAPURCLUS_(—)2 andAF041468_(—)9.

Example 114 Isolation of cDNA Clones Encoding Human PRO1561

[3960] A consensus DNA sequence was assembled relative to other ESTsequences using phrap and repeated cycles of BLAST and phrap to extend asequence as far as possible using the EST sequences discussed above asdescribed in Example 1 above. This consensus sequence is hereindesignated DNA40630. Based on the DNA40630 consensus sequence,oligonucleotides were synthesized: 1) to identify by PCR a cDNA librarythat contained the sequence of interest, and 2) for use as probes toisolate a clone of the full-length coding sequence for PRO1561.

[3961] PCR primers (forward and reverse) were synthesized: forward PCRprimer (40630.f1) 5′-CTGCCTCCACTGCTCTGTGCTGGG-3′ (SEQ ID NO:379) reversePCR primer (40630.r1) 5′-CAGAGCAGTGGATGTTCCCCTGGG-3′ (SEQ ID NO:380)

[3962] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA40630 sequence which had the followingnucleotide sequence hybridization probe (40630.p1)5′-CTGAACAAGATGGTCAAGCAAGTGACTGGGAAAATGCCCATCCTC-3′ (SEQ ID NO:381)

[3963] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1561 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human breast tumortissue.

[3964] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1561 (designated herein as DNA76538-1670[FIG. 221, SEQ ID NO: 377]; and the derived protein sequence forPRO1561.

[3965] The entire nucleotide sequence of DNA76538-1670 is shown in FIG.221 (SEQ ID NO: 377). Clone DNA76538-1670 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 29-31 and ending at the stop codon at nucleotide positions377-379 (FIG. 221). The predicted polypeptide precursor is 116 aminoacids long (FIG. 222). The full length PRO1561 protein shown in FIG. 222has an estimated molecular weight of about 12,910 daltons and a pI ofabout 6.41. Analysis of the full-length PRO1561 sequence shown in FIG.222 (SEQ ID NO: 378) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 17, a transmembranedomain from about amino acid 1 to about amino acid 24, a potentialN-glycosylation site from about amino acid 86 to about amino acid 89,potential N-myristolation sites from about amino acid 20 to about aminoacid 25 and from about amino acid 45 to about amino acid 50 and aphospholipase A2 histidine active site from about amino acid 63 to aboutamino acid 70. Clone DNA76538-1670 has been deposited with ATCC on Oct.6, 1998 and is assigned ATCC deposit no. 203313.

[3966] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 222 (SEQ ID NO: 378), evidenced significanthomology between the PRO1561 amino acid sequence and the followingDayhoff sequences: P_R63053, P_R25416, P_R63055, P_P93363, P_R63046,PA2A_VIPPA, P_W58476, GEN13747, PA2X_HUMAN and PA2A_CRODU.

[3967] In addition to the above, a sequence homology search evidencedsignificant homology between the DNA40630 consensus sequence and IncyteEST clone no. 1921092. As such, Incyte EST clone no. 1921092 waspurchased and the insert obtained and sequenced, thereby giving rise tothe DNA76538-1670 sequence shown in FIG. 221 (SEQ ID NO: 377).

Example 115 Isolation of cDNA Clones Encoding Human PRO1567

[3968] A cDNA sequence isolated in the amylase screen described inExample 2 above is herein designated DNA47580. The DNA47580 sequence wasthen compared to a variety of expressed sequence tag (EST) databaseswhich included public EST databases (e.g., GenBank) and a proprietaryEST DNA database (LIFESEQ™, Incyte Pharmaceuticals, Palo Alto, Calif.)to identify existing homologies. The homology search was performed usingthe computer program BLAST or BLAST2 (Altshul et al., Methods inEnzymology 35 266:460-480 (1996)). Those comparisons resulting in aBLAST score of 70 (or in some cases 90) or greater that did not encodeknown proteins were clustered and assembled into consensus DNA sequenceswith the program “phrap” (Phil Green, University of Washington, Seattle,Wash.). The consensus sequence obtained therefrom is herein designated“DNA57246”.

[3969] In light of the sequence homology between the DNA57246 sequenceand EST no. 1793996 from the LIFESEQ™ database, the clone containing theEST no. 1793996, which originates from a library constructed fromprostate tumor tissue, was purchased and the cDNA insert was obtainedand sequenced. The sequence of this cDNA insert is shown in FIG. 223(SEQ ID NO: 382) and is herein designated as DNA76541-1675.

[3970] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 109-111, and a stop signal at nucleotide positions643-645 (FIG. 223; SEQ ID NO: 382). The predicted polypeptide precursoris 178 amino acids long has a calculated molecular weight ofapproximately 19,600 daltons and an estimated pI of approximately 5.89.Additional features include a signal peptide at about amino acids 1-22;a potential N-glycosylation site at about amino acids 167-170; a proteinkinase C phosphorylation site at about amino acids 107-109; andpotential N-myristoylation sites at about amino acids 46-51, 72-77, and120-125.

[3971] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 224 (SEQ ID NO: 383), evidenced significanthomology between the PRO1567 amino acid sequence and human colonspecific gene CSG6 polypeptide designated Dayhoff sequence “P_W06549”.Homology was also found between the PRO1567 amino acid sequence and thefollowing additional Dayhoff sequences: HUAC002301_(—)1, P_(—)246880,A49685, SPBP_RAT, S42924, SPBP_MOUSE, I52115, MMU03711_(—)1, andAF041468_(—)31.

[3972] Clone DNA76541-1675 has been deposited with the ATCC on Oct. 27,1998, and is assigned ATCC deposit no. 203409.

Example 116 Isolation of cDNA Clones Encoding Human PRO1693

[3973] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA38251. Based on the DNA38251 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1693.

[3974] PCR primers (forward and reverse) were synthesized: forward PCRprimer (38251.f1) 5′-CTGGGATCTGAACAGTTTCGGGGC-3′ (SEQ ID NO:386) reversePCR primer (38251.r1) 5′-GGTCCCCAGGACATGGTCTGTCCC-3′ (SEQ ID NO:387)

[3975] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA38251 sequence which had the followingnucleotide sequence hybridization probe (38251.p1)5′-GCTGAGTTTACATTTACGGTCTAACTCCCTGAGAACCATCCCTGTGCG-3′ (SEQ ID NO:388)

[3976] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1693 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal kidneytissue.

[3977] DNA sequencing of the clones isolated as described above gave thefull length DNA sequence for PRO1693 (designated herein as DNA77301-1708[FIG. 225, SEQ ID NO: 384]; and the derived protein sequence forPRO1693.

[3978] The entire nucleotide sequence of DNA77301-1708 is shown in FIG.225 (SEQ ID NO: 384). Clone DNA77301-1708 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 508-510 and ending at the stop codon at nucleotide positions2047-2049 (FIG. 225). The predicted polypeptide precursor is 513 aminoacids long (FIG. 226). The full-length PRO1693 protein shown in FIG. 226has an estimated molecular weight of about 58,266 daltons and a pI ofabout 9.84. Analysis of the full-length PRO1693 sequence shown in FIG.226 (SEQ ID NO: 385) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 33, a transmembranedomain from about amino acid 420 to about amino acid 442, potentialN-glycosylation sites from about amino acid 126 to about amino acid 129,from about amino acid 357 to about amino acid 360, from about amino acid496 to about amino acid 499 and from about amino acid 504 to about aminoacid 507, a cAMP- and cGMP-dependent protein kinase phosphorylation sitefrom about amino acid 465 to about amino acid 468, a tyrosine kinasephosphorylation site from about amino acid 136 to about amino acid 142and potential N-myristolation sites from about amino acid 11 to aboutamino acid 16, from about amino acid 33 to about amino acid 38, fromabout amino acid 245 to about amino acid 250, from about amino acid 332to about amino acid 337, from about amino acid 497 to about amino acid502 and from about amino acid 507 to about amino acid 512. CloneDNA77301-1708 has been deposited with ATCC on Oct. 27, 1998 and isassigned ATCC deposit no. 203407.

[3979] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 226 (SEQ ID NO: 385), evidenced significanthomology between the PRO1693 amino acid sequence and the followingDayhoff sequences: AB007876_(—)1, ALS_MOUSE, HSCHON03_(—)1, P_R85889,AF062006_(—)1, AB014462_(—)1, A58532, MUSLRRPA_(—)1, AB007865_(—)1 andAF030435 1.

Example 117 Isolation of cDNA Clones Encoding Human PRO1784

[3980] A cDNA sequence isolated in the amylase screen described inExample 2 above is herein designated DNA43862. Based on the DNA43862sequence, oligonucleotide probes were generated and used to screen ahuman fetal kidney library prepared as described in paragraph 1 above.The cloning vector was pRK5B (pRK5B is a precursor of pRK5D that doesnot contain the SfiI site; see, Holmes et al., Science, 253:1278-1280(1991)), and the cDNA size cut was less than 2800 bp.

[3981] PCR primers (forward and reverse) were synthesized: forward PCRprimer (f1) 5′-CTTTTCAGTGTCACCTCAGCGATCTC-3′ (SEQ ID NO:391); andreverse PCR primer (r1) 5′-CCAAAACATGGAGCAGGAACAGG-3′ (SEQ ID NO:392).

[3982] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the DNA43862 sequence which had the followingnucleotide sequence: hybridization probe (p1)5′-CCAGTTGGTGCTCTCGGACCTACCATGCGAAGAAGATGAAATGTGTG-3′ (SEQ ID NO:393).

[3983] In order to screen several libraries for a source of a fulllength clone, DNA from the libraries was screened by PCR amplificationwith the PCR primer pair identified above. A positive library was thenused to isolate clones encoding the PRO1784 gene using the probeoligonucleotide and one of the PCR primers.

[3984] A full length clone was identified that contained a single openreading frame with an apparent translational initiation site atnucleotide positions 68-70, and a stop signal at nucleotide positions506-508 (FIG. 227; SEQ ID NO: 389). The predicted polypeptide precursoris 146 amino acids long has a calculated molecular weight ofapproximately 16,116 daltons and an estimated pI of approximately 4.99.The approximate locations of the signal peptide, transmembrane domainand N-myristoylation site are indicated in FIG. 228. Clone DNA77303-2502has been deposited with the ATCC and is assigned ATCC deposit no.203479.

[3985] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 228 (SEQ ID NO: 390), evidenced sequence identitybetween the PRO1784 amino acid sequence and the following Dayhoffsequences: RNU87224_(—)1, RNAF000114_(—)1, P_W31947, S18038,AE001300_(—)8, AF039833_(—)1, P_W39833_(—)1, P_W39788, HSU87223_(—)1,NTU06712_(—)1, and P_W31946.

Example 118 Isolation of cDNA Clones Encoding Human PRO1605

[3986] A cDNA clone (DNA77648-1688) encoding a native human PRO1605polypeptide was identified by a yeast screen, in a human fetal kidneycDNA library that preferentially represents the 5′ ends of the primarycDNA clones.

[3987] The full-length DNA77648-1688 clone shown in FIG. 229 contains asingle open reading frame with an apparent translational initiation siteat nucleotide positions 425427 and ending at the stop codon atnucleotide Is positions 845-847 (FIG. 229). The predicted polypeptideprecursor is 140 amino acids long (FIG. 230). The full-length PRO1605protein shown in FIG. 230 has an estimated molecular weight of about15,668 daltons and a pI of about 10.14. Analysis of the full-lengthPRO1605 sequence shown in FIG. 230 (SEQ ID NO: 395) evidences thepresence of the following: a signal peptide from about amino acid 1 toabout amino acid 26. Clone DNA77648-1688 has been deposited with ATCC onOct. 27, 1998 and is assigned ATCC deposit no. 203408.

[3988] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 230 (SEQ ID NO: 395), evidenced significanthomology between the PRO1605 amino acid sequence and the followingDayhoff sequences: GNT5_HUMAN, P_R48975, P_W22519, MM26SPROT_(—)1,HSU86782_(—)1, CH60_LEPIN, HMCT_HELPY, F65126, HIU08875_(—)1 andP_R41724.

Example 119 Isolation of cDNA Clones Encoding Human PRO1788

[3989] The extracellular domain (ECD) sequences (including the secretionsignal sequence, if any) from about 950 known secreted proteins from theSwiss-Prot public database were used to search EST databases. The ESTdatabases included public EST databases (e.g., GenBank), and aproprietary EST database (LIFESEQ3, Incyte Pharmaceuticals, Palo Alto,Calif.). The search was performed using the computer program BLAST orBLAST2 [Altschul et al., Methods in Enzymology, 266:460-480 (1996)] as acomparison of the ECD protein sequences to a 6 frame translation of theEST sequences. Incyte Clone No. 2968304 was identified as a sequence ofinterest having a BLAST score of 70 or greater that did not encode knownproteins. The nucleotide sequence of Incyte Clone No. 2968304 isdesignated herein as “DNA6612”.

[3990] In addition, the DNA6612 sequence was extended using repeatedcycles of BLAST and phrap (Phil Green, University of Washington,Seattle, Wash.) to extend the sequence as far as possible using thesources of EST sequences discussed above. The extended consensussequence is designated herein as “DNA49648”. Based on the DNA49648consensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO1788.

[3991] PCR primers (forward and reverse) were synthesized: forward PCRprimer: CCCTGCCAGCCGAGAGCTTCACC (49648.f1; SEQ ID NO:398) reverse PCRprimer: GGTTGGTGCCCGAAAGGTCCAGC (49648.r1; SEQ ID NO:399)

[3992] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA49648 sequence which had the followingnucleotide sequence: hybridization probe:CAACCCCAAGCTTAACTGGGCAGGAGCTGAGGTGTTTTCAGGCC (49648.p1; SEQ ID NO:400)

[3993] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1788 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human fetal kidneytissue.

[3994] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1788 (designated herein as DNA77652-2505[FIG. 231, SEQ ID NO: 396]; and the derived protein sequence forPRO1788.

[3995] The entire coding sequence of PRO1788 is shown in FIG. 231 (SEQID NO: 396). Clone DNA77652-2505 contains a single open reading framewith an apparent translational initiation site at nucleotide positions64-66 and an apparent stop codon at nucleotide positions 1123-1125. Thepredicted polypeptide precursor is 353 amino acids long. The full-lengthPRO1788 protein shown in FIG. 232 has an estimated molecular weight ofabout 37,847 daltons and a pI of about 6.80. Additional features ofPRO1788 include: a signal peptide at about amino acids 1-16;transmembrane domains at about amino acids 215-232 and 287-304;potential N-glycosylation sites at about amino acids 74-77 and 137-140;a glycosarninoglycan attachment site at about amino acids 4548; atyrosine kinase phosphorylation site at about amino acids 318-325;N-myristoylation sites at about amino acids 13-18, 32-37, 88-93,214-219, and 223-228; and a leucine zipper pattern at about amino acids284-305.

[3996] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 232 (SEQ ID NO: 397), revealed significanthomology between the PRO1788 amino acid sequence and the followingDayhoff sequences: AF030435_(—)1; AF062006_(—)1; DMTARTAN_(—)1;GARP_HUMAN; S42799; P_R71294; HSU88879_(—)1; DROWHEELER_(—)1; A58532;and AF068920_(—)1.

[3997] Clone DNA77652-2505 was deposited with the ATCC on Nov. 17, 1998,and is assigned ATCC deposit no. 203480.

Example 120 Isolation of cDNA Clones Encoding Human PRO1801

[3998] A proprietary expressed sequence tag (EST) DNA database(LIFESEQ®, Incyte Pharmaceuticals, Palo Alto, Calif.) was searched andan EST was identified which showed homology to the IL-19 protein. ThisEST sequence is Incyte EST clone no. 819592 and is herein designatedDNA79293. Based on the DNA79293 sequence, oligonucleotides weresynthesized: 1) to identify by PCR a cDNA library that contained thesequence of interest, and 2) for use as probes to isolate a clone of thefull-length coding sequence for PRO1801.

[3999] PCR primers (forward and reverse) were synthesized: forward PCRprimer 5′-CTCCTGTGGTCTCCAGATTTCAGGCCTA-3′ (SEQ ID NO:403) reverse PCRprimer 5′-AGTCCTCCTTAAGATTCTGATGTCAA-3′ (SEQ ID NO:404)

[4000] RNA for construction of the cDNA libraries was isolated fromhuman fetal kidney tissue. The cDNA libraries used to isolated the cDNAclones were constructed by standard methods using commercially availablereagents such as those from Invitrogen, San Diego, Calif. The cDNA wasprimed with oligo dT containing a NotI site, linked with blunt to SalIhemikinased adaptors, cleaved with NotI, sized appropriately by gelelectrophoresis, and cloned in a defined orientation into a suitablecloning vector (such as pRKB or pRKD; pRK5B is a precursor of pRK5D thatdoes not contain the SfiI site; see, Holmes et al., Science,253:1278-1280 (1991)) in the unique XhoI and NotI sites.

[4001] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1801 (designated herein as DNA83500-2506[FIG. 233, SEQ ID NO: 401]; and the derived protein sequence forPRO1801.

[4002] The entire nucleotide sequence of DNA83500-2506 is shown in FIG.233 (SEQ ID NO: 401). Clone DNA83500-2506 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 109-111 and ending at the stop codon at nucleotide positions892-894 (FIG. 233). The predicted polypeptide precursor is 261 aminoacids long (FIG. 234). The full-length PRO1801 protein shown in FIG. 234has an estimated molecular weight of about 29,667 daltons and a pI ofabout 8.76. Analysis of the full-length PRO1801 sequence shown in FIG.234 (SEQ ID NO: 402) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 42, cAMP- andcGMP-dependent protein kinase phosphorylation sites from about aminoacid 192 to about amino acid 195 and from about amino acid 225 to aboutamino acid 228 and potential N-myristolation sites from about amino acid42 to about amino acid 47, from about amino acid 46 to about amino acid51 and from about amino acid 136 to about amino acid 141. CloneDNA83500-2506 has been deposited with ATCC on Oct. 29, 1998 and isassigned ATCC deposit no. 203391.

[4003] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 234 (SEQ ID NO: 402), evidenced significanthomology between the PRO1801 amino acid sequence and the followingDayhoff sequences: P_W37935, HGS_B477, P_R32277, IL10_MACFA, P_W46585,P_R39714, P_R71471, P_R10159, IL10_RAT and P_W57201.

Example 121 Isolation of cDNA Clones Encoding Human UCP4

[4004] EST databases, which included public EST databases (e.g.,GenBank), and a proprietary EST database (LIFESEQ™, IncytePharmaceuticals, Palo Alto, Calif.), were searched for sequences havinghomologies to human UCP3. The search was performed using the computerprogram BLAST or BLAST2 [Altschul et al., Methods in Enzymology,266:460480 (1996)] as a comparison of the UCP3 protein sequences to a 6frame translation of the EST sequences. Those comparisons resulting in aBLAST score of 70 (or in some cases, 90) or greater that did not encodeknown proteins were clustered and assembled into consensus DNA sequenceswith the program Assemb1LIGN and MacVector (Oxford Molecular Group,Inc.).

[4005] A DNA sequence (“fromDNA”) was assembled relative to other ESTsequences using Assemb1LIGN software. In addition, the fromDNA sequencewas extended using repeated cycles of BLAST and Assemb1LIGN to extendthe sequence as far as possible using the sources of EST sequencesdiscussed above. Based on this DNA sequence, oligonucleotides weresynthesized to isolate a clone of the full-length coding sequences forUCP4 by PCR. Forward and reverse PCR primers generally range from 20 to30 nucleotides and are often designed to give a PCR product of about100-1000 bp in length. The probe sequences are typically 40-55 bp inlength. In some cases, additional oligonucleotides are synthesized whenthe consensus sequence is greater than about 1-1.5 kbp.

[4006] PCR primers (forward and reverse) were synthesized: forward PCRprimer CGCGGATCCCGTTATCGTCTTGCGCTACTGC (SEQ ID NO:407) reverse PCRprimer GCGGAATTCTTAAAATGGACTGACTCCACTCATC (SEQ ID NO:408)

[4007] RNA for construction of the cDNA libraries was isolated frombrain tissue. The cDNA libraries used to isolated the cDNA clones wereconstructed by standard methods using commercially available reagentssuch as those from Invitrogen, San Diego, Calif. The cDNA was primedwith oligo dT containing a NotI site, linked with blunt to SalIhemikinased adaptors, cleaved with NotI, sized appropriately by gelelectrophoresis, and cloned in a defined orientation into a suitablecloning vector (such as pRKB or pRKD; pRK5B is a precursor of pRK5D thatdoes not contain the SfiI site; see, Holmes et al., Science,253:1278-1280 (1991)) in the unique XhoI and NotI sites.

[4008] DNA sequencing of the clone isolated by PCR as described abovegave the full-length DNA sequence for UCP4 (designated herein asDNA77568-1626 [FIG. 235, SEQ ID NO: 405] and the derived proteinsequence for UCP4.

[4009] The entire coding sequence of UCP4 is shown in FIG. 235 (SEQ IDNO: 405). Clone DNA77568-1626 contains a single open reading frame withan apparent translational initiation site at nucleotide positions 27-29,and an apparent stop codon at nucleotide positions 996-998. (See FIG.235; SEQ ID NO: 405). The predicted polypeptide precursor is 323 aminoacids long. It is presently believed that UCP4 is a membrane-boundprotein and contains at least 6 transmembrane regions. These putativetransmembrane regions in the UCP4 amino acid sequence are illustrated inFIG. 236. Clone DNA77568-1626, contained in the pcDNA3 vector(Invitrogen) has been deposited with ATCC and is assigned ATCC depositno. 203134. UCP4 polypeptide is obtained or obtainable by expressing themolecule encoded by the cDNA insert of the deposited ATCC 203134 vector.Digestion of the vector with BamHI and EcoRI restriction enzymes willyield an approximate 972 plus 34 bp insert. The full-length UCP4 proteinshown in FIG. 236 has an estimated molecular weight of about 36,061daltons and a pI of about 9.28.

Example 122 Isolation of cDNA Clones Encoding Hurnan PRO193

[4010] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. Based on thisconsensus sequence, oligonucleotides were synthesized: 1) to identify byPCR a cDNA library that contained the sequence of interest, and 2) foruse as probes to isolate a clone of the full-length coding sequence forPRO193.

[4011] A pair of PCR primers (forward and reverse) were synthesized:forward PCR primer 5′-GTTTGAGGAAGCTGGGATAC-3′ (SEQ ID NO:411); andreverse PCR primer 5′-CCAAACTCGAGCACCTGTTC-3′ (SEQ ID NO:412).

[4012] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus sequence which had the followingnucleotide sequence: hybridization probe5′-ATGGCAGGCTTCCTAGATAATTTTCGTTGGCCAGAATGTG-3′ (SEQ ID NO:413).

[4013] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO193 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the CDNA libraries was isolated from human retina tissue(LIB94).

[4014] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO193 [herein designated as DNA23322-1393](SEQ ID NO: 409) and the derived protein sequence for PRO193.

[4015] The entire nucleotide sequence of DNA23322-1393 is shown in FIG.237 (SEQ ID NO: 409). Clone DNA23322-1393 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 138-140 and ending at the stop codon at nucleotide positions612-614 (FIG. 237). The predicted polypeptide precursor is 158 aminoacids long (FIG. 238). The full-length PRO193 protein shown in FIG. 238has an estimated molecular weight of about 17,936 and a pI of about5.32. Clone DNA23322-1393 has been deposited with the ATCC. Regardingthe sequence, it is understood that the deposited clone contains thecorrect sequence, and the sequences provided herein are based on knownsequencing techniques.

[4016] Still analyzing the amino acid sequence of SEQ ID NO: 410,transmembrane domains are at about amino acids 23-42, 60-80, 97-117 and128-148 of SEQ ID NO: 410. A cell attachment sequence is about aminoacids 81-83 of SEQ ID NO: 410. A peroxidase proximal heme-ligand domainis at about amino acids 81-83 of SEQ ID NO: 410. The correspondingnucleotides can be routinely determined given the sequences providedherein.

Example 123 Isolation of cDNA Clones Encoding Human PRO1130

[4017] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA34360. Based on the DNA34360 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1130.

[4018] PCR primers (forward and reverse) were synthesized: forward PCRprimer (34360.f1) 5′-GCCATAGTCACGACATGGATG-3′ (SEQ ID NO:416) forwardPCR primer (34360.f2) 5′-GGATGGCCAGAGCTGCTG-3′ (SEQ ID NO:417) forwardPCR primer (34360.f3) 5′-AAAGTACAAGTGTGGCCTCATCAAGC-3′ (SEQ ID NO:418)reverse PCR primer (34360.r1) 5′-TCTGACTCCTAAGTCAGGCAGGAG-3′ (SEQ IDNO:419) reverse PCR primer (34360.r2) 5′-ATTCTCTCCACAGACAGCTGGTTC-3′(SEQ ID NO:420)

[4019] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA34360 sequence which had the followingnucleotide sequence hybridization probe (34360.p1)5′-GTACAAGTGTGGCCTCATCAAGCCCTGCCCAGCCAACTACTTTGCG-3′ (SEQ ID NO:421)

[4020] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1130 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human aorticendothelial cell tissue.

[4021] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1130 (designated herein as DNA59814-1486[FIG. 239, SEQ ID NO: 414]; and the derived protein sequence forPRO1130.

[4022] The entire nucleotide sequence of DNA59814-1486 is shown in FIG.239 (SEQ ID NO: 414). Clone DNA59814-1486 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 312-314 and ending at the stop codon at nucleotide positions984-986 (FIG. 239). The predicted polypeptide precursor is 224 aminoacids long (FIG. 240). The full-length PRO1130 protein shown in FIG. 240has an estimated molecular weight of about 24,963 daltons and a pI ofabout 9.64. Analysis of the full-length PRO1130 sequence shown in FIG.240 (SEQ ID NO: 415) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 15, anATP/GTP-binding site motif A from about amino acid 184 to about aminoacid 191 and a potential N-glycosylation site from about amino acid 107to about amino acid 110. Clone DNA59814-1486 has been deposited withATCC on Oct. 20,1998 and is assigned ATCC deposit no. 203359.

[4023] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 240 (SEQ ID NO: 415), evidenced significanthomology between the PRO1130 amino acid sequence and the followingDayhoff sequences: P_W06547, 216_HUMAN, D87120_(—)1, MMU72677_(—)1,LAU04889_(—)1, and D69319.

Example 124 Isolation of cDNA Clones Encoding Human PRO1335

[4024] A consensus DNA sequence was assembled relative to other ESTsequences using phrap as described in Example 1 above. This consensussequence is herein designated DNA35727. Based on the DNA35727 consensussequence, oligonucleotides were synthesized: 1) to identify by PCR acDNA library that contained the sequence of interest, and 2) for use asprobes to isolate a clone of the full-length coding sequence forPRO1335.

[4025] PCR primers (forward and reverse) were synthesized: forward PCRprimer (35727.f1) 5′-GTAAAGTCGCTGGCCAGC-3′ (SEQ ID NO:424) forward PCRprimer (35727.f2) 5′-CCCGATCTGCCTGCTGTA-3′ (SEQ ID NO:425) reverse PCRprimer (35727.r1) 5′-CTGCACTGTATGGCCATTATTGTG-3′ (SEQ ID NO:426)

[4026] Additionally, a synthetic oligonucleotide hybridization probe wasconstructed from the consensus DNA35727 sequence which had the followingnucleotide sequence hybridization probe (35727.p1)5′-CAGAAACCCATGATACCCTACTGAACACCGAATCCCCTGGAAGCC-3′ (SEQ ID NO:427)

[4027] In order to screen several libraries for a source of afull-length clone, DNA from the libraries was screened by PCRamplification with the PCR primer pair identified above. A positivelibrary was then used to isolate clones encoding the PRO1335 gene usingthe probe oligonucleotide and one of the PCR primers. RNA forconstruction of the cDNA libraries was isolated from human retinatissue.

[4028] DNA sequencing of the clones isolated as described above gave thefull-length DNA sequence for PRO1335 (designated herein as DNA62812-1594[FIG. 241, SEQ ID NO: 422]; and the derived protein sequence forPRO1335.

[4029] The entire nucleotide sequence of DNA62812-1594 is shown in FIG.241 (SEQ ID NO: 422). Clone DNA62812-1594 contains a single open readingframe with an apparent translational initiation site at nucleotidepositions 271-273 and ending at the stop codon at nucleotide positions1282-1284 (FIG. 241). The predicted polypeptide precursor is 337 aminoacids long (FIG. 242). The full-length PRO1335 protein shown in FIG. 242has an estimated molecular weight of about 37,668 daltons and a pi ofabout 6.27. Analysis of the full-length PRO1335 sequence shown in FIG.242 (SEQ ID NO: 423) evidences the presence of the following: a signalpeptide from about amino acid 1 to about amino acid 15, a transmembranedomain from about amino acid 291 to about amino acid 310, a potentialN-glycosylation site from about amino acid 213 to about amino acid 216and amino acid sequence blocks having homology to eukaryotic-typecarbonic anhydrase proteins from about amino acid 197 to about aminoacid 245, from about amino acid 104 to about amino acid 140 and fromabout amino acid 22 to about amino acid 69. Clone DNA62812-1594 has beendeposited with ATCC on Sep. 9, 1998 and is assigned ATCC deposit no.203248.

[4030] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 242 (SEQ ID NO: 423), evidenced significanthomology between the PRO1335 amino acid sequence and the followingDayhoff sequences: AF037335_(—)1, I138013, PTPG_MOUSE, CAH2_HUMAN, 1CAC,CAH7_HUMAN, CAH3_HUMAN, CAH1_HUMAN, CAH5_HUMAN and P_R41746.

Example 125 Isolation of cDNA Clones Encoding Human PRO1329

[4031] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST cluster sequence from the LIFESEQ®database, designated Incyte Cluster No. 167544, also referred herein as“DNA10680”. This EST cluster sequence was then compared to a variety ofexpressed sequence tag (EST) databases which included public ESTdatabases (e.g., GenBank) and a proprietary EST DNA database (LIFESEQ®,Incyte Pharmaceuticals, Palo Alto, Calif.) to identify existinghomologies. The homology search was performed using the computer programBLAST or BLAST2 (Altshul et al., Methods in Enzymology 266:460-480(1996)). Those comparisons resulting in a BLAST score of 70 (or in somecases 90) or greater that did not encode known proteins were clusteredand assembled into a consensus DNA sequence with the program “phrap”(Phil Green, University of Washington, Seattle, Wash.). One or more ofthe ESTs was derived from a cDNA library constructed from RNA isolatedfrom synovial membrane tissue removed from the elbow of a female withrheumatoid arthritis. The consensus sequence obtained therefrom isherein designated “DNA58836”.

[4032] In light of the sequence homology between the DNA58836 sequenceand a sequence contained within the Incyte EST clone no. 368774, ESTclone 368774 was purchased and the cDNA insert was obtained andsequenced. The sequence of this cDNA insert is shown in FIG. 243 and isherein designated as DNA66660-1585.

[4033] The full length clone shown in FIG. 243 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 90 to 92 and ending at the stop codon found atnucleotide positions 717 to 719 (FIG. 243; SEQ ID NO: 428). Thepredicted polypeptide precursor (FIG. 244, SEQ ID NO: 429) is 209 aminoacids long, with a signal sequence at about amino acids 1-16. PRO1329has a calculated molecular weight of approximately 21,588 daltons and anestimated pI of approximately 5.50. Clone DNA66660-1585 was depositedwith the ATCC on Sep. 22, 1998 and is assigned ATCC deposit no. 203279.

[4034] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 244 (SEQ ID NO: 429), revealed some homologybetween the PRO1329 amino acid sequence and the following Dayhoffsequences: CELK06A9_(—)3, PROA_XANCP, CXU21300_(—)4, MTV037_(—)17,SYN1_RAT, I56542, S60743, BNOLE3_(—)1, AB001573_(—)1, and P_P80671.

Example 126 Isolation of cDNA Clones Encodina Human PRO1550

[4035] Use of the signal sequence algorithm described in Example 3 aboveallowed identification of an EST sequence from the Merck database,designated CELT15B7_(—)12, also referred herein as “DNA10022”. This ESTsequence was then compared to a variety of expressed sequence tag (EST)databases which included public and proprietary EST databases (e.g.,GenBank and LIFESEQ®) to identify existing homologies. The homologysearch was performed using the computer program BLAST or BLAST2 (Altshulet al., Methods in Enzymology 266:460-480 (1996)). Those comparisonsresulting in a BLAST score of 70 (or in some cases 90) or greater thatdid not encode known proteins were clustered and assembled into aconsensus DNA sequence with the program “phrap” (Phil Green, Universityof Washington, Seattle, Wash.). The consensus sequence obtainedtherefrom is herein designated “DNA55708”.

[4036] In light of the sequence homology between the DNA55708 sequenceand a sequence contained within Incyte EST no. 3411659, the EST clone3411659 was purchased and the cDNA insert was obtained and sequenced inits entirety. The sequence of this cDNA insert is shown in FIG. 245 andis herein designated as “DNA76393-1664”.

[4037] The full length clone shown in FIG. 245 contained a single openreading frame with an apparent translational initiation site atnucleotide positions 138 to 140 and ending at the stop codon found atnucleotide positions 867 to 869 (FIG. 245; SEQ ID NO: 430). Thepredicted polypeptide precursor (FIG. 246, SEQ ID NO: 431) is 243 aminoacids long. Other features of the PRO1550 protein include: a signalsequence at about amino acids 1-30; a hydrophobic domain at about aminoacids 195-217; and a potential N-glycosylation site at about amino acids186-189. PRO1550 has a calculated molecular weight of approximately26,266 daltons and an estimated pI of approximately 8.43. CloneDNA76393-1664 was deposited with the ATCC on Oct. 6, 1998, and isassigned ATCC deposit no. 203323.

[4038] An analysis of the Dayhoff database (version 35.45 SwissProt 35),using a WU-BLAST2 sequence alignment analysis of the full-lengthsequence shown in FIG. 246 (SEQ ID NO: 431), revealed some homologybetween the PRO1550 amino acid sequence and the following Dayhoffsequences: CELF59E12_(—)11; CA24_ASCSU; AF018082_(—)1; CA13_BOVIN;CA54_HUMAN; CA34_HUMAN; HUMCOL7A1X_(—)1; P_W09643; AF053538_(—)1; andHSEMCXIV2_(—)1.

Example 127 Use of PRO as a Hybridization Probe

[4039] The following method describes use of a nucleotide sequenceencoding PRO as a hybridization probe.

[4040] DNA comprising the coding sequence of full-length or mature PROas disclosed herein is employed as a probe to screen for homologous DNAs(such as those encoding naturally-occurring variants of PRO) in humantissue cDNA libraries or human tissue genomic libraries.

[4041] Hybridization and washing of filters containing either libraryDNAs is performed under the following high stringency conditions.Hybridization of radiolabeled PRO-derived probe to the filters isperformed in a solution of 50% formamide, 5× SSC, 0.1% SDS, 0.1% sodiumpyrophosphate, 50 mM sodium phosphate, pH 6.8, 2× Denhardt's solution,and 10% dextran sulfate at 42° C. for 20 hours. Washing of the filtersis performed in an aqueous solution of 0.1× SSC and 0.1% SDS at 42° C.

[4042] DNAs having a desired sequence identity with the DNA encodingfull-length native sequence PRO can then be identified using standardtechniques known in the art.

Example 128 Expression of PRO in E. coli

[4043] This example illustrates preparation of an unglycosylated form ofPRO by recombinant expression in E. coli.

[4044] The DNA sequence encoding PRO is initially amplified usingselected PCR primers. The primers should contain restriction enzymesites which correspond to the restriction enzyme sites on the selectedexpression vector. A variety of expression vectors may be employed. Anexample of a suitable vector is pBR322 (derived from E. coli; seeBolivar et al., Gene, 2:95 (1977)) which contains genes for ampicillinand tetracycline resistance. The vector is digested with restrictionenzyme and dephosphorylated. The PCR amplified sequences are thenligated into the vector. The vector will preferably include sequenceswhich encode for an antibiotic resistance gene, a trp promoter, apolyhis leader (including the first six STII codons, polyhis sequence,and enterokinase cleavage site), the PRO coding region, lambdatranscriptional terminator, and an argU gene.

[4045] The ligation mixture is then used to transform a selected E. colistrain using the methods described in Sambrook et al., supra.Transformants are identified by their ability to grow on LB plates andantibiotic resistant colonies are then selected. Plasmid DNA can beisolated and confined by restriction analysis and DNA sequencing.

[4046] Selected clones can be grown overnight in liquid culture mediumsuch as LB broth supplemented with antibiotics. The overnight culturemay subsequently be used to inoculate a larger scale culture. The cellsare then grown to a desired optical density, during which the expressionpromoter is turned on.

[4047] After culturing the cells for several more hours, the cells canbe harvested by centrifugation. The cell pellet obtained by thecentrifugation can be solubilized using various agents known in the art,and the solubilized PRO protein can then be purified using a metalchelating column under conditions that allow tight binding of theprotein.

[4048] PRO may be expressed in E. coli in a poly-His tagged form, usingthe following procedure. The DNA encoding PRO is initially amplifiedusing selected PCR primers. The primers will contain restriction enzymesites which correspond to the restriction enzyme sites on the selectedexpression vector, and other useful sequences providing for efficientand reliable translation initiation, rapid purification on a metalchelation column, and proteolytic removal with enterokinase. ThePCR-amplified, poly-His tagged sequences are then ligated into anexpression vector, which is used to transform an E. coli host based onstrain 52 (W3110 fuhA(tonA) Ion galE rpoHts(htpRts) clpP(lacIq).Transformants are first grown in LB containing 50 mg/ml carbenicillin at30° C. with shaking until an O.D.600 of 3-5 is reached. Cultures arethen diluted 50-100 CRAP media (prepared by mixing 3.57 g (NH₄)₂SO₄,0.71 g sodium citrate.2H2O, 1.07 g KCl, 5.36 g Difco yeast extract, 5.36g Sheffield hycase SF in 500 mL water, as well as 110 mM MPOS, pH 7.3,0.55% (w/v) glucose and 7 mM MgSO₄) and grown for approximately 20-30hours at 30° C. with shaking. Samples are removed to verify expressionby SDS-PAGE analysis, and the bulk culture is centrifuged to pellet thecells. Cell pellets are frozen until purification and refolding.

[4049]E. coli paste from 0.5 to 1 L fermentations (6-10 g pellets) isresuspended in 10 volumes (w/v) in 7 M guanidine, 20 mM Tris, pH 8buffer. Solid sodium sulfite and sodium tetrathionate is added to makefinal concentrations of 0.1 M and 0.02 M, respectively, and the solutionis stirred overnight at 4° C. This step results in a denatured proteinwith all cysteine residues blocked by sulfitolization. The solution iscentrifuged at 40,000 rpm in a Beckman Ultracentifuge for 30 min. Thesupernatant is diluted with 3-5 volumes of metal chelate column buffer(6 M guanidine, 20 mM Tris, pH 7.4) and filtered through 0.22 micronfilters to clarify. The clarified extract is loaded onto a 5 ml QiagenNi-NTA metal chelate column equilibrated in the metal chelate columnbuffer. The column is washed with additional buffer containing 50 mMimidazole (Calbiochem, Utrol grade), pH 7.4. The protein is eluted withbuffer containing 250 mM imidazole. Fractions containing the -desiredprotein are pooled and stored at 4° C. Protein concentration isestimated by its absorbance at 280 nm using the calculated extinctioncoefficient based on its amino acid sequence.

[4050] The proteins are refolded by diluting the sample slowly intofreshly prepared refolding buffer consisting of: 20 mM Tris, pH 8.6, 0.3M NaCl, 2.5 M urea, 5 mM cysteine, 20 mM glycine and 1 mM EDTA.Refolding volumes are chosen so that the final protein concentration isbetween 50 to 100 micrograms/ml. The refolding solution is stirredgently at 4° C. for 12-36 hours. The refolding reaction is quenched bythe addition of TFA to a final concentration of 0.4% (pH ofapproximately 3). Before further purification of the protein, thesolution is filtered through a 0.22 micron filter and acetonitrile isadded to 2-10% final concentration. The refolded protein ischromatographed on a Poros R1/H reversed phase column using a mobilebuffer of 0.1% TFA with elution with a gradient of acetonitrile from 10to 80%. Aliquots of fractions with A280 absorbance are analyzed on SDSpolyacrylamide gels and fractions containing homogeneous refoldedprotein are pooled. Generally, the properly refolded species of mostproteins are eluted at the lowest concentrations of acetonitrile sincethose species are the most compact with their hydrophobic interiorsshielded from interaction with the reversed phase resin. Aggregatedspecies are usually eluted at higher acetonitrile concentrations. Inaddition to resolving misfolded forms of proteins from the desired form,the reversed phase step also removes endotoxin from the samples.

[4051] Fractions containing the desired folded PRO polypeptide arepooled and the acetonitrile removed using a gentle stream of nitrogendirected at the solution. Proteins are formulated into 20 mM Hepes, pH6.8 with 0.14 M sodium chloride and 4% mannitol by dialysis or by gelfiltration using G25 Superfine (Pharmacia) resins equilibrated in theformulation buffer and sterile filtered.

[4052] Many of the PRO polypeptides disclosed herein were successfullyexpressed as described above.

Example 129 Expression of PRO in Mammalian Cells

[4053] This example illustrates preparation of a potentiallyglycosylated form of PRO by recombinant expression in mammalian cells.

[4054] The vector, pRK5 (see EP 307,247, published Mar. 15, 1989), isemployed as the expression vector. Optionally, the PRO DNA is ligatedinto pRK5 with selected restriction enzymes to allow insertion of thePRO DNA using ligation methods such as described in Sambrook et al.,supra. The resulting vector is called pRK5-PRO.

[4055] In one embodiment, the selected host cells may be 293 cells.Human 293 cells (ATCC CCL 1573) are grown to confluence in tissueculture plates in medium such as DMEM supplemented with fetal calf serumand optionally, nutrient components and/or antibiotics. About 10 μgpRK5-PRO DNA is mixed with about 1 μg DNA encoding the VA RNA gene[Thimmappaya et al., Cell, 31:543 (1982)] and dissolved in 500 μl of 1mM Tris-HCl, 0.1 mM EDTA, 0.227 M CaCl₂. To this mixture is added,dropwise, 500 μl of 50 mM HEPES (pH 7.35), 280 mM NaCl, 1.5 mM NaPO₄,and a precipitate is allowed to form for 10 minutes at 25° C. Theprecipitate is suspended and added to the 293 cells and allowed tosettle for about four hours at 37° C. The culture medium is aspiratedoff and 2 ml of 20% glycerol in PBS is added for 30 seconds. The 293cells are then washed with serum free medium, fresh medium is added andthe cells are incubated for about 5 days.

[4056] Approximately 24 hours after the transfections, the culturemedium is removed and replaced with culture medium (alone) or culturemedium containing 200 μCi/ml ³⁵S-cysteine and 200 μCi/ml ³⁵S-methionine.After a 12 hour incubation, the conditioned medium is collected,concentrated on a spin filter, and loaded onto a 15% SDS gel. Theprocessed gel may be dried and exposed to film for a selected period oftime to reveal the presence of PRO polypeptide. The cultures containingtransfected cells may undergo further incubation (in serum free medium)and the medium is tested in selected bioassays.

[4057] In an alternative technique, PRO may be introduced into 293 cellstransiently using the dextran sulfate method described by Somparyrac etal., Proc. Natl. Acad. Sci., 12:7575 (1981). 293 cells are grown tomaximal density in a spinner flask and 700 μg pRK5-PRO DNA is added. Thecells are first concentrated from the spinner flask by centrifugationand washed with PBS. The DNA-dextran precipitate is incubated on thecell pellet for four hours. The cells are treated with 20% glycerol for90 seconds, washed with tissue culture medium, and re-introduced intothe spinner flask containing tissue culture medium, 5 μg/ml bovineinsulin and 0.1 μug/ml bovine transferrin. After about four days, theconditioned media is centrifuged and filtered to remove cells anddebris. The sample containing expressed PRO can then be concentrated andpurified by any selected method, such as dialysis and/or columnchromatography.

[4058] In another embodiment, PRO can be expressed in CHO cells. ThepRK5-PRO can be transfected into CHO cells using known reagents such asCaPO₄ or DEAE-dextran. As described above, the cell cultures can beincubated, and the medium replaced with culture medium (alone) or mediumcontaining a radiolabel such as ³⁵S-methionine. After determining thepresence of PRO polypeptide, the culture medium may be replaced withserum free medium. Preferably, the cultures are incubated for about 6days, and then the conditioned medium is harvested. The mediumcontaining the expressed PRO can then be concentrated and purified byany selected method.

[4059] Epitope-tagged PRO may also be expressed in host CHO cells. ThePRO may be subcloned out of the pRK5 vector. The subclone insert canundergo PCR to fuse in frame with a selected epitope tag such as apoly-his tag into a Baculovirus expression vector. The poly-his taggedPRO insert can then be subcloned into a SV40 driven vector containing aselection marker such as DHFR for selection of stable clones. Finally,the CHO cells can be transfected (as described above) with the SV40driven vector. Labeling may be performed, as described above, to verifyexpression. The culture medium containing the expressed poly-His taggedPRO can then be concentrated and purified by any selected method, suchas by Ni²⁺-chelate affinity chromatography.

[4060] PRO may also be expressed in CHO and/or COS cells by a transientexpression procedure or in CHO cells by another stable expressionprocedure.

[4061] Stable expression in CHO cells is performed using the followingprocedure. The proteins are expressed as an IgG construct(immunoadhesin), in which the coding sequences for the soluble forms(e.g. extracellular domains) of the respective proteins are fused to anIgG1 constant region sequence containing the hinge, CH2 and CH2 domainsand/or is a poly-His tagged form.

[4062] Following PCR amplification, the respective DNAs are subcloned ina CHO expression vector using standard techniques as described inAusubel et al., Current Protocols of Molecular Biology, Unit 3.16, JohnWiley and Sons (1997). CHO expression vectors are constructed to havecompatible restriction sites 5′ and 3′ of the DNA of interest to allowthe convenient shuttling of cDNA's. The vector used expression in CHOcells is as described in Lucas et al., Nucl. Acids Res. 24:9 (1774-1779(1996), and uses the SV40 early promoter/enhancer to drive expression ofthe cDNA of interest and dihydrofolate reductase (DHFR). DHFR expressionpermits selection for stable maintenance of the plasmid followingtransfection.

[4063] Twelve micrograms of the desired plasmid DNA is introduced intoapproximately 10 million CHO cells using commercially availabletransfection reagents Superfect® (Quiagen), Dosper® or Fugene®(Boehringer Mannheim). The cells are grown as described in Lucas et al.,supra. Approximately 3×10⁻⁷ cells are frozen in an ampule for furthergrowth and production as described below.

[4064] The ampules containing the plasmid DNA are thawed by placementinto water bath and mixed by vortexing. The contents are pipetted into acentrifuge tube containing 10 mLs of media and centrifuged at 1000 rpmfor 5 minutes. The supernatant is aspirated and the cells areresuspended in 10 mL of selective media (0.2 μm filtered PS20 with 5%0.2,μm diafiltered fetal bovine serum). The cells are then aliquotedinto a 100 mL spinner containing 90 mL of selective media. After 1-2days, the cells are transferred into a 250 mL spinner filled with 150 mLselective growth medium and incubated at 37° C. After another 2-3 days,250 mL, 500 mL and 2000 mL spinners are seeded with 3×10⁵ cells/mL. Thecell media is exchanged with fresh media by centrifuigation andresuspension in production medium. Although any suitable CHO media maybe employed, a production medium described in U.S. Pat. No. 5,122,469,issued Jun. 16, 1992 may actually be used. A 3L production spinner isseeded at 1.2×10⁶ cells/mL. On day 0, the cell number pH ie determined.On day 1, the spinner is sampled and sparging with filtered air iscommenced. On day 2, the spinner is sampled, the temperature shifted to33° C., and 30 mL of 500 g/L glucose and 0.6 mL of 10% antifoam (e.g.,35% polydimethylsiloxane emulsion, Dow Corning 365 Medical GradeEmulsion) taken. Throughout the production, the pH is adjusted asnecessary to keep it at around 7.2. After 10 days, or until theviability dropped below 70%, the cell culture is harvested bycentrifugation and filtering through a 0.22 μm filter. The filtrate waseither stored at 4° C. or immediately loaded onto columns forpurification.

[4065] For the poly-His tagged constructs, the proteins are purifiedusing a Ni-NTA column (Qiagen). Before purification, imidazole is addedto the conditioned media to a concentration of 5 mM. The conditionedmedia is pumped onto a 6 ml Ni-NTA column equilibrated in 20 mM Hepes,pH 7.4, buffer containing 0.3 M NaCl and 5 mM imidazole at a flow rateof 4-5 ml/min. at 4° C. After loading, the column is washed withadditional equilibration buffer and the protein eluted withequilibration buffer containing 0.25 M imidazole. The highly purifiedprotein is subsequently desalted into a storage buffer containing 10 mMHepes, 0.14 M NaCl and 4% mannitol, pH 6.8, with a 25 ml G25 Superfine(Pharmacia) column and stored at −80° C.

[4066] Immunoadhesin (Fc-containing) constructs are purified from theconditioned media as follows. The conditioned medium is pumped onto a 5ml Protein A column (Pharmacia) which had been equilibrated in 20 mM Naphosphate buffer, pH 6.8. After loading, the column is washedextensively with equilibration buffer before elution with 100 mM citricacid, pH 3.5. The eluted protein is immediately neutralized bycollecting 1 ml fractions into tubes containing 275 μL of 1 M Trisbuffer, pH 9. The highly purified protein is subsequently desalted intostorage buffer as described above for the poly-His tagged proteins. Thehomogeneity is assessed by SDS polyacrylamide gels and by N-terminalamino acid sequencing by Edman degradation.

[4067] Many of the PRO polypeptides disclosed herein were successfullyexpressed as described above.

Example 130 Expression of PRO in Yeast

[4068] The following method describes recombinant expression of PRO inyeast.

[4069] First, yeast expression vectors are constructed for intracellularproduction or secretion of PRO from the ADH2/GAPDH promoter. DNAencoding PRO and the promoter is inserted into suitable restrictionenzyme sites in the selected plasmid to direct intracellular expressionof PRO. For secretion, DNA encoding PRO can be cloned into the selectedplasmid, together with DNA encoding the ADH2/GAPDH promoter, a nativePRO signal peptide or other mammalian signal peptide, or, for example, ayeast alpha-factor or invertase secretory signal/leader sequence, andlinker sequences (if needed) for expression of PRO.

[4070] Yeast cells, such as yeast strain AB 110, can then be transformedwith the expression plasmids described above and cultured in selectedfermentation media. The transformed yeast supernatants can be analyzedby precipitation with 10% trichloroacetic acid and separation bySDS-PAGE, followed by staining of the gels with Coomassie Blue stain.

[4071] Recombinant PRO can subsequently be isolated and purified byremoving the yeast cells from the fermentation medium by centrifugationand then concentrating the medium using selected cartridge filters. Theconcentrate containing PRO may further be purified using selected columnchromatography resins.

[4072] Many of the PRO polypeptides disclosed herein were successfullyexpressed as described above.

Example 131 Expression of PRO in Baculovirus-Infected Insect Cells

[4073] The following method describes recombinant expression of PRO inBaculovirus-infected insect cells.

[4074] The sequence coding for PRO is fused upstream of an epitope tagcontained within a baculovirus expression vector. Such epitope tagsinclude poly-his tags and immunoglobulin tags (like Fc regions of IgG).A variety of plasmids may be employed, including plasmids derived fromcommercially available plasmids such as pVL1393 (Novagen). Briefly, thesequence encoding PRO or the desired portion of the coding sequence ofPRO such as the sequence encoding the extracellular domain of atransmembrane protein or the sequence encoding the mature protein if theprotein is extracellular is amplified by PCR with primers complementaryto the 5′ and 3′ regions. The 5′ primer may incorporate flanking(selected) restriction enzyme sites. The product is then digested withthose selected restriction enzymes and subcloned into the expressionvector.

[4075] Recombinant baculovirus is generated by co-transfecting the aboveplasmid and BaculoGold™ virus DNA (Pharmingen) into Spodopterafrugiperda (“Sf9”) cells (ATCC CRL 1711) using lipofectin (commerciallyavailable from GIBCO-BRL). After 4-5 days of incubation at 28° C., thereleased viruses are harvested and used for further amplifications.Viral infection and protein expression are performed as described byO'Reilley et al., Baculovirus expression vectors: A Laboratory Manual,Oxford: Oxford University Press (1994).

[4076] Expressed poly-his tagged PRO can then be purified, for example,by Ni²⁺-chelate affinity chromatography as follows. Extracts areprepared from recombinant virus-infected Sf9 cells as described byRupert et al., Nature, 362:175-179 (1993). Briefly, Sf9 cells arewashed, resuspended in sonication buffer (25 mL Hepes, pH 7.9; 12.5 mMMgCl₂; 0.1 mM EDTA; 10% glycerol; 0.1% NP-40; 0.4 M KCl), and sonicatedtwice for 20 seconds on ice. The sonicates are cleared bycentrifugation, and the supernatant is diluted 50-fold in loading buffer(50 mM phosphate, 300 mM NaCl, 10% glycerol, pH 7.8) and filteredthrough a 0.45 μm filter. A Ni²⁺-NTA agarose column (commerciallyavailable from Qiagen) is prepared with a bed volume of 5 mL, washedwith 25 mL of water and equilibrated with 25 mL of loading buffer. Thefiltered cell extract is loaded onto the column at 0.5 mL per minute.The column is washed to baseline A₂₈₀ with loading buffer, at whichpoint fraction collection is started. Next, the column is washed with asecondary wash buffer (50 mM phosphate; 300 mM NaCl, 10% glycerol, pH6.0), which elutes nonspecifically bound protein. After reaching A₂₈₀baseline again, the column is developed with a 0 to 500 mM Imidazolegradient in the secondary wash buffer. One mL fractions are collectedand analyzed by SDS-PAGE and silver staining or Western blot withNi²⁺-NTA-conjugated to alkaline phosphatase (Qiagen). Fractionscontaining the eluted His₁₀-tagged PRO are pooled and dialyzed againstloading buffer.

[4077] Alternatively, purification of the IgG tagged (or Fc tagged) PROcan be performed using known chromatography techniques, including forinstance, Protein A or protein G column chromatography.

[4078] Many of the PRO polypeptides disclosed herein were successfullyexpressed as described above.

Example 132 Preparation of Antibodies that Bind PRO

[4079] This example illustrates preparation of monoclonal antibodieswhich can specifically bind PRO.

[4080] Techniques for producing the monoclonal antibodies are known inthe art and are described, for instance, in Goding, supra. Immunogensthat may be employed include purified PRO, fusion proteins containingPRO, and cells expressing recombinant PRO on the cell surface. Selectionof the immunogen can be made by the skilled artisan without undueexperimentation.

[4081] Mice, such as Balb/c, are immunized with the PRO immunogenemulsified in complete Freund's adjuvant and injected subcutaneously orintraperitoneally in an amount from 1-100 micrograms. Alternatively, theimmunogen is emulsified in MPL-TDM adjuvant (Ribi ImmunochemicalResearch, Hamilton, Mont.) and injected into the animal's hind footpads. The immunized mice are then boosted 10 to 12 days later withadditional immunogen emulsified in the selected adjuvant. Thereafter,for several weeks, the mice may also be boosted with additionalimmunization injections. Serum samples may be periodically obtained fromthe mice by retro-orbital bleeding for testing in ELISA assays to detectanti-PRO antibodies.

[4082] After a suitable antibody titer has been detected, the animals“positive” for antibodies can be injected with a final intravenousinjection of PRO. Three to four days later, the mice are sacrificed andthe spleen cells are harvested. The spleen cells are then fused (using35% polyethylene glycol) to a selected murine myeloma cell line such asP3×63AgU.1, available from ATCC, No. CRL 1597. The fusions generatehybridoma cells which can then be plated in 96 well tissue cultureplates containing HAT (hypoxanthine, aminopterin, and thymidine) mediumto inhibit proliferation of non-fused cells, myeloma hybrids, and spleencell hybrids.

[4083] The hybridoma cells will be screened in an ELISA for reactivityagainst PRO. Determination of “positive” hybridoma cells secreting thedesired monoclonal antibodies against PRO is within the skill in theart.

[4084] The positive hybridoma cells can be injected intraperitoneallyinto syngeneic Balb/c mice to produce ascites containing the anti-PROmonoclonal antibodies. Alternatively, the hybridoma cells can be grownin tissue culture flasks or roller bottles. Purification of themonoclonal antibodies produced in the ascites can be accomplished usingammonium sulfate precipitation, followed by gel exclusionchromatography. Alternatively, affinity chromatography based uponbinding of antibody to protein A or protein G can be employed.

Example 133 Purification of PRO Polypelptides Using Specific Antibodies

[4085] Native or recombinant PRO polypeptides may be purified by avariety of standard techniques in the art of protein purification. Forexample, pro-PRO polypeptide, mature PRO polypeptide, or pre-PROpolypeptide is purified by immunoaffinity chromatography usingantibodies specific for the PRO polypeptide of interest. In general, animmunoaffinity column is constructed by covalently coupling the anti-PROpolypeptide antibody to an activated chromatographic resin.

[4086] Polyclonal immunoglobulins are prepared from immune sera eitherby precipitation with ammonium sulfate or by purification on immobilizedProtein A (Pharmacia LKB Biotechnology, Piscataway, N.J.). Likewise,monoclonal antibodies are prepared from mouse ascites fluid by ammoniumsulfate precipitation or chromatography on immobilized Protein A.Partially purified immunoglobulin is covalently attached to achromatographic resin such as CnBr-activated SEPHAROSE™ (Pharmacia LKBBiotechnology). The antibody is coupled to the resin, the resin isblocked, and the derivative resin is washed according to themanufacturer's instructions.

[4087] Such an immunoaffinity column is utilized in the purification ofPRO polypeptide by preparing a fraction from cells containing PROpolypeptide in a soluble form. This preparation is derived bysolubilization of the whole cell or of a subcellular fraction obtainedvia differential centrifugation by the addition of detergent or by othermethods well known in the art. Alternatively, soluble PRO polypeptidecontaining a signal sequence may be secreted in useful quantity into themedium in which the cells are grown.

[4088] A soluble PRO polypeptide-containing preparation is passed overthe immunoaffinity column, and the column is washed under conditionsthat allow the preferential absorbance of PRO polypeptide (e.g., highionic strength buffers in the presence of detergent). Then, the columnis eluted under conditions that disrupt antibody/PRO polypeptide binding(e.g., a low pH buffer such as approximately pH 2-3, or a highconcentration of a chaotrope such as urea or thiocyanate ion), and PROpolypeptide is collected.

Example 134 Drug Screening

[4089] This invention is particularly useful for screening compounds byusing PRO polypeptides or binding fragment thereof in any of a varietyof drug screening techniques. The PRO polypeptide or fragment employedin such a test may either be free in solution, affixed to a solidsupport, borne on a cell surface, or located intracellularly. One methodof drug screening utilizes eukaryotic or prokaryotic host cells whichare stably transformed with recombinant nucleic acids expressing the PROpolypeptide or fragment. Drugs are screened against such transformedcells in competitive binding assays. Such cells, either in viable orfixed form, can be used for standard binding assays. One may measure,for example, the formation of complexes between PRO polypeptide or afragment and the agent being tested. Alternatively, one can examine thediminution in complex formation between the PRO polypeptide and itstarget cell or target receptors caused by the agent being tested.

[4090] Thus, the present invention provides methods of screening fordrugs or any other agents which can affect a PRO polypeptide-associateddisease or disorder. These methods comprise contacting such an agentwith an PRO polypeptide or fragment thereof and assaying (I) for thepresence of a complex between the agent and the PRO polypeptide orfragment, or (ii) for the presence of a complex between the PROpolypeptide or fragment and the cell, by methods well known in the art.In such competitive binding assays, the PRO polypeptide or fragment istypically labeled. After suitable incubation, free PRO polypeptide orfragment is separated from that present in bound form, and the amount offree or uncomplexed label is a measure of the ability of the particularagent to bind to PRO polypeptide or to interfere with the PROpolypeptide/cell complex.

[4091] Another technique for drug screening provides high throughputscreening for compounds having suitable binding affinity to apolypeptide and is described in detail in WO 84/03564, published on Sep.13, 1984. Briefly stated, large numbers of different small peptide testcompounds are synthesized on a solid substrate, such as plastic pins orsome other surface. As applied to a PRO polypeptide, the peptide testcompounds are reacted with PRO polypeptide and washed. Bound PROpolypeptide is detected by methods well known in the art. Purified PROpolypeptide can also be coated directly onto plates for use in theaforementioned drug screening techniques. In addition, non-neutralizingantibodies can be used to capture the peptide and immobilize it on thesolid support.

[4092] This invention also contemplates the use of competitive drugscreening assays in which neutralizing antibodies capable of binding PROpolypeptide specifically compete with a test compound for binding to PROpolypeptide or fragments thereof. In this manner, the antibodies can beused to detect the presence of any peptide which shares one or moreantigenic determinants with PRO polypeptide.

Example 135 Rational Drug Design

[4093] The goal of rational drug design is to produce structural analogsof biologically active polypeptide of interest (i.e., a PRO polypeptide)or of small molecules with which they interact, e.g., agonists,antagonists, or inhibitors. Any of these examples can be used to fashiondrugs which are more active or stable forms of the PRO polypeptide orwhich enhance or interfere with the function of the PRO polypeptide invivo (cf., Hodgson, Bio/Technology, 9: 19-21 (1991)).

[4094] In one approach, the three-dimensional structure of the PROpolypeptide, or of an PRO polypeptide-inhibitor complex, is determinedby x-ray crystallography, by computer modeling or, most typically, by acombination of the two approaches. Both the shape and charges of the PROpolypeptide must be ascertained to elucidate the structure and todetermine active site(s) of the molecule. Less often, useful informationregarding the structure of the PRO polypeptide may be gained by modelingbased on the structure of homologous proteins. In both cases, relevantstructural information is used to design analogous PRO polypeptide-likemolecules or to identify efficient inhibitors. Useful examples ofrational drug design may include molecules which have improved activityor stability as shown by Braxton and Wells, Biochemistry, 31:7796-7801(1992) or which act as inhibitors, agonists, or antagonists of nativepeptides as shown by Athauda et al., J. Biochem., 113:742-746 (1993).

[4095] It is also possible to isolate a target-specific antibody,selected by functional assay, as described above, and then to solve itscrystal structure. This approach, in principle, yields a pharmacore uponwhich subsequent drug design can be based. It is possible to bypassprotein crystallography altogether by generating anti-idiotypicantibodies (anti-ids) to a functional, pharmacologically activeantibody. As a mirror image of a mirror image, the binding site of theanti-ids would be expected to be an analog of the original receptor. Theanti-id could then be used to identify and isolate peptides from banksof chemically or biologically produced peptides. The isolated peptideswould then act as the pharmacore.

[4096] By virtue of the present invention, sufficient amounts of the PROpolypeptide may be made available to perform such analytical studies asX-ray crystallography. In addition, knowledge of the PRO polypeptideamino acid sequence provided herein will provide guidance to thoseemploying computer modeling techniques in place of or in addition tox-ray crystallography.

Example 136 Stimulation of Endothelial Cell Proliferation (Assay 8)

[4097] This assay is designed to determine whether PRO polypeptides ofthe present invention show the ability to stimulate adrenal corticalcapillary endothelial cell (ACE) growth. PRO polypeptides testingpositive in this assay would be expected to be useful for thetherapeutic treatment of conditions or disorders where angiogenesiswould be beneficial including, for example, wound healing, and the like(as would agonists of these PRO polypeptides). Antagonists of the PROpolypeptides testing positive in this assay would be expected to beuseful for the therapeutic treatment of cancerous tumors.

[4098] Bovine adrenal cortical capillary endothelial (ACE) cells (fromprimary culture, maximum of 12-14 passages) were plated in 96-wellplates at 500 cells/well per 100 microliter. Assay media included lowglucose DMEM, 10% calf serum, 2 mM glutamine, and 1×penicillin/streptomycin/fungizone. Control wells included the following:(1) no ACE cells added; (2) ACE cells alone; (3) ACE cells plus VEGF (5ng/ml); and (4) ACE cells plus FGF (5 ng/ml). The control or testsample, (in 100 microliter volumes), was then added to the wells (atdilutions of 1%, 0.1% and 0.01%, respectively). The cell cultures wereincubated for 6-7 days at 37° C./5% CO₂. After the incubation, the mediain the wells was aspirated, and the cells were washed 1× with PBS. Anacid phosphatase reaction mixture (100 microliter; 0.1M sodium acetate,pH 5.5, 0.1% Triton X-100, 10 mM p-nitrophenyl phosphate) was then addedto each well. After a 2 hour incubation at 37° C., the reaction wasstopped by addition of 10 microliters 1N NaOH. Optical density (OD) wasmeasured on a microplate reader at 405 nm.

[4099] The activity of a PRO polypeptide was calculated as the foldincrease in proliferation (as determined by the acid phosphataseactivity, OD 405 nm) relative to (1) cell only background, and (2)relative to maximum stimulation by VEGF. VEGF (at 3-10 ng/ml) and FGF(at 1-5 ng/ml) were employed as an activity reference for maximumstimulation. Results of the assay were considered “positive” if theobserved stimulation was ≧50% increase over background. VEGF (5 ng/ml)control at 1% dilution gave 1.24 fold stimulation; FGF (5 ng/ml) controlat 1% dilution gave 1.46 fold stimulation.

[4100] The following PRO polypeptides tested positive in this assay:PRO1244, PRO1286 and PRO1303.

Example 137 Inhibitory Activity in Mixed Lymphocyte Reaction (MLR) Assay(Assay 67)

[4101] This example shows that one or more of the polypeptides of theinvention are active as inhibitors of the proliferation of stimulatedT-lymphocytes. Compounds which inhibit proliferation of lymphocytes areuseful therapeutically where suppression of an immune response isbeneficial.

[4102] The basic protocol for this assay is described in CurrentProtocols in Immunology, unit 3.12; edited by J E Coligan, A MKruisbeek, D H Marglies, E M Shevach, W Strober, National Insitutes ofHealth, Published by John Wiley & Sons, Inc.

[4103] More specifically, in one assay variant, peripheral bloodmononuclear cells (PBMC) are isolated from mammalian individuals, forexample a human volunteer, by leukopheresis (one donor will supplystimulator PBMCs, the other donor will supply responder PBMCs). Ifdesired, the cells are frozen in fetal bovine serum and DMSO afterisolation. Frozen cells may be thawed overnight in assay media (37° C.,5% CO₂) and then washed and resuspended to 3×10⁶ cells/ml of assay media(RPMI; 10% fetal bovine serum, 1% penicillin/streptomycin, 1% glutamine,1% HEPES, 1% non-essential amino acids, 1% pyruvate). The stimulatorPBMCs are prepared by irradiating the cells (about 3000 Rads).

[4104] The assay is prepared by plating in triplicate wells a mixtureof:

[4105] 100:1 of test sample diluted to 1% or to 0.1%,

[4106] 50:1 of irradiated stimulator cells, and

[4107] 50:1 of responder PBMC cells.

[4108] 100 microliters of cell culture media or 100 microliter ofCD4-IgG is used as the control. The wells are then incubated at 37° C,5% CO₂ for 4 days. On day 5, each well is pulsed with tritiatedthymidine (1.0 mC/well; Amersham). After 6 hours the cells are washed 3times and then the uptake of the label is evaluated.

[4109] In another variant of this assay, PBMCs are isolated from thespleens of Balb/c mice and C57B6 mice. The cells are teased from freshlyharvested spleens in assay media (RPMI; 10% fetal bovine serum, 1%penicillin/streptomycin, 1% glutamine, 1% HEPES, 1% non-essential aminoacids, 1% pyruvate) and the PBMCs are isolated by overlaying these cellsover Lympholyte M (Organon Teknika), centrifuging at 2000 rpm for 20minutes, collecting and washing the mononuclear cell layer in assaymedia and resuspending the cells to 1×10⁷ cells/ml of assay media. Theassay is then conducted as described above.

[4110] Any decreases below control is considered to be a positive resultfor an inhibitory compound, with decreases of less than or equal to 80%being preferred. However, any value less than control indicates aninhibitory effect for the test protein.

[4111] The following polypeptide tested positive in this assay: PRO1250,PRO1418 and PRO1410.

Example 138 Stimulation of Heart Neonatal Hypertrophy (Assay 1)

[4112] This assay is designed to measure the ability of PRO polypeptidesto stimulate hypertrophy of neonatal heart. PRO polypeptides testingpositive in this assay would be expected to be useful for thetherapeutic treatment of various cardiac insufficiency disorders.

[4113] Cardiac myocytes from 1-day old Harlan Sprague Dawley rats wereobtained. Cells (180 μl at 7.5×10⁴/ml, serum <0.1%, freshly isolated)are added on day 1 to 96-well plates previously coated with DMEM/F12+4%FCS. Test samples containing the test PRO polypeptide are added directlyto wells on day 2 in 20 μL volumes. Cells are stained with crystalviolet after an additional two days and scored visually by the next day.Incubator conditions require 5% CO₂.

[4114] Activity reference: phenylephrine at 1-100 μM, PGF-2 alpha at0.1-1.0 μM, endothelin-1 at 1-10 nM, CT1 (LIF) at 1-10 nM. No PBS isincluded, since calcium concentration is critical for assay response.Assay media included: DMEM/F12 (with 2.44 gm bicarbonate), 10 μg/mltransferrin, 1 μg/ml insulin, 1 μg/ml aprotinin, 2 mmol/L glutamine, 100U/ml penicillin G, 100 μg/ml streptomycin. Protein buffer containingmannitol (4%) gave a positive signal (score 3.5) at {fraction (1/10)}(0.4%) and {fraction (1/100)} (0.04%), but not at {fraction (1/1000)}(0.004%). Therefore, the test sample buffer containing mannitol is notrun. A secondary assay consists of measuring the ANP levels (ng/ml) byELISA in conditioned media from the cells. An increase in the ANPmessage can be measured by PCR from cells after a few hours.

[4115] Results are assessed by visually observing cell size: a score=3.5or greater is considered positive for conditioned media; a score of 3.0or greater is considered positive for purified protein.

[4116] The following purified PRO polypeptide was observed to stimulateneonatal heart hypertrophy in this assay: PRO1246.

Example 139 Inhibition of Vascular Endothelial Growth Factor (VEGF)Stimulated Proliferation of Endothelial Cell Growth (Assay 9)

[4117] The ability of various PRO polypeptides to inhibit VEGFstimulated proliferation of endothelial cells was tested. Polypeptidestesting positive in this assay are useful for inhibiting endothelialcell growth in mammals where such an effect would be beneficial, e.g.,for inhibiting tumor growth.

[4118] Specifically, bovine adrenal cortical capillary endothelial cells(ACE) (from primary culture, maximum of 12-14 passages) were plated in96-well plates at 500 cells/well per 100 microliter. Assay mediaincluded low glucose DMEM, 10% calf serum, 2 mM glutamine, and 1×penicillin/streptomycin/fungizone. Control wells included the following:(1) no ACE cells added; (2) ACE cells alone; (3) ACE cells plus 5 ng/mlFGF; (4) ACE cells plus 3 ng/ml VEGF; (5) ACE cells plus 3 ng/ml VEGFplus 1 ng/ml TGF-beta; and (6) ACE cells plus 3 ng/ml VEGF plus 5 ng/mlLIF. The test samples, poly-his tagged PRO polypeptides (in 100microliter volumes), were then added to the wells (at dilutions of 1%,0.1% and 0.01%, respectively). The cell cultures were incubated for 6-7days at 37° C./5% CO₂. After the incubation, the media in the wells wasaspirated, a the cells were washed 1× with PBS. An acid phosphatasereaction mixture (100 microliter; 0.1M sodium acetate, pH 5.5, 0.1%Triton X-100, 10 mM p-nitrophenyl phosphate) was then added to eachwell. After a 2 hour incubation at 37° C., the reaction was stopped byaddition of 10 microliters 1N NaOH. Optical density (OD) was measured ona microplate reader at 405 nm.

[4119] The activity of PRO polypeptides was calculated as the percentinhibition of VEGF (3 ng/ml) stimulated proliferation (as determined bymeasuring acid phosphatase activity at OD 405 nm) relative to the cellswithout stimulation. TGF-beta was employed as an activity reference at 1ng/ml, since TGF-beta blocks 70-90% of VEGF-stimulated ACE cellproliferation. The results are indicative of the utility of the PROpolypeptides in cancer therapy and specifically in inhibiting tumorangiogenesis. Numerical values (relative inhibition) are determined bycalculating the percent inhibition of VEGF stimulated proliferation bythe PRO polypeptides relative to cells without stimulation and thendividing that percentage into the percent inhibition obtained by TGF-βat 1 ng/ml which is known to block 70-90% of VEGF stimulated cellproliferation. The results are considered positive if the PROpolypeptide exhibits 30% or greater inhibition of VEGF stimulation ofendothelial cell growth (relative inhibition 30% or greater).

[4120] The following polypeptide tested positive in this assay: PRO1246.

Example 140 Human Venous Endothelial Cell Calcium Flux Assay (Assay 68)

[4121] This assay is designed to determine whether PRO polypeptides showthe ability to stimulate calcium flux in human umbilical veinendothelial cells (HUVEC, Cell Systems). Calcium influx is a welldocumented response upon binding of certain ligands to their receptors.A test compound that results in a positive response in the presentcalcium influx assay can be said to bind to a specific receptor andactivate a biological signaling pathway in human endothelial cells. Thiswill ultimately lead, for example, to cell division, inhibition of cellproliferation, endothelial tube formation, cell migration, apoptosis,etc.

[4122] Human venous umbilical vein endothelial cells (HUVEC, CellSystems) in growth media (50:50 without glycine, 1% glutamine, 10 mMHepes, 10% FBS, 10 ng/ml bFGF), were plated on 96-well microtiterViewPlates-96 (Packard Instrument Company Part #6005182) microtiterplates at a cell density of 2×10⁴ cells/well. The day after plating, thecells were washed three times with buffer (HBSS plus 10 mM Hepes),leaving 100 μl/well. Then 100 μl/well of 8 μM Fluo-3 (2×) was added. Thecells were incubated for 1.5 hours at 37° C./5% CO₂. After incubation,the cells were then washed 3× with buffer (described above) leaving 100μl/well. Test samples of the PRO polypeptides were prepared on different96-well plates at 5× concentration in buffer. The positive controlcorresponded to 50 μM ionomycin (5×); the negative control correspondedto Protein 32. Cell plate and sample plates were run on a FLIPR(Molecular Devices) machine. The FLIPR machine added 25 μl of testsample to the cells, and readings were taken every second for oneminute, then every 3 seconds for the next three minutes.

[4123] The fluorescence change from baseline to the maximum rise of thecurve (A change) was calculated, and replicates averaged. The rate offluorescence increase was monitored, and only those samples which had aΔ change greater than 1000 and a rise within 60 seconds, were consideredpositive.

[4124] The following PRO polypeptides tested positive in this assay:PRO1246 and PRO1561.

Example 141 Skin Vascular Permeability Assay (Assay 64)

[4125] This assay shows that certain polypeptides of the inventionstimulate an immune response and induce inflammation by inducingmononuclear cell, eosinophil and PMN infiltration at the site ofinjection of the animal. Compounds which stimulate an immune responseare useful therapeutically where stimulation of an immune response isbeneficial. This skin vascular permeability assay is conducted asfollows. Hairless guinea pigs weighing 350 grams or more areanesthetized with ketamine (75-80 mg/Kg) and 5 mg/Kg xylazineintramuscularly (IM). A sample of purified polypeptide of the inventionor a conditioned media test sample is injected intradermally onto thebacks of the test animals with 100 μl per injection site. It is possibleto have about 10-30, preferably about 16-24, injection sites per animal.One μl of Evans blue dye (1% in physiologic buffered saline) is injectedintracardially. Blemishes at the injection sites are then measured (mmdiameter) at 1 hr and 6 hr post injection. Animals were sacrificed at 6hrs after injection. Each skin injection site is biopsied and fixed informalin. The skins are then prepared for histopathologic evaluation.Each site is evaluated for inflammatory cell infiltration into the skin.Sites with visible inflammatory cell inflammation are scored aspositive. Inflammatory cells may be neutrophilic, eosinophilic,monocytic or lymphocytic. At least a minimal perivascular infiltrate atthe injection site is scored as positive, no infiltrate at the site ofinjection is scored as negative.

[4126] The following polypeptide tested positive in this assay: PRO1283,PRO1325 and PRO1343.

Example 142 Induction of c-fos in Endothelial Cells (Assay 34)

[4127] This assay is designed to determine whether PRO polypeptides showthe ability to induce c-fos in endothelial cells. PRO polypeptidestesting positive in this assay would be expected to be useful for thetherapeutic treatment of conditions or disorders where angiogenesiswould be beneficial including, for example, wound healing, and the like(as would agonists of these PRO polypeptides). Antagonists of the PROpolypeptides testing positive in this assay would be expected to beuseful for the therapeutic treatment of cancerous tumors.

[4128] Human venous umbilical vein endothelial cells (HTJVEC, CellSystems) in growth media (50% Ham's F12 w/o GHT: low glucose, and 50%DMEM without glycine: with NaHCO3, 1% glutamine, 10 mM HEPES, 10% FBS,10 ng/ml bFGF) were plated on 96-well microtiter plates at a celldensity of 1×10⁴cells/well. The day after plating, the cells werestarved by removing the growth media and treating the cells with 100μl/well test samples and controls (positive control=growth media;negative control=Protein 32 buffer=10 mM HEPES, 140 mM NaCl, 4% (w/v)mannitol, pH 6.8). The cells were incubated for 30 minutes at 37° C., in5% CO₂. The samples were removed, and the first part of the bDNA kitprotocol (Chiron Diagnostics, cat. #6005-037) was followed, where eachcapitalized reagent/buffer listed below was available from the kit.

[4129] Briefly, the amounts of the TM Lysis Buffer and Probes needed forthe tests were calculated based on information provided by themanufacturer. The appropriate amounts of thawed Probes were added to theTM Lysis Buffer. The Capture Hybridization Buffer was warmed to roomtemperature. The bDNA strips were set up in the metal strip holders, and100 μl of Capture Hybridization Buffer was added to each b-DNA wellneeded, followed by incubation for at least 30 minutes. The test plateswith the cells were removed from the incubator, and the media was gentlyremoved using the vacuum manifold. 100 μl of Lysis Hybridization Bufferwith Probes were quickly pipetted into each well of the microtiterplates. The plates were then incubated at 55° C. for 15 minutes. Uponremoval from the incubator, the plates were placed on the vortex mixerwith the microtiter adapter head and vortexed on the #2 setting for oneminute. 80 μl of the lysate was removed and added to the bDNA wellscontaining the Capture Hybridization Buffer, and pipetted up and down tomix. The plates were incubated at 53° C. for at least 16 hours.

[4130] On the next day, the second part of the bDNA kit protocol wasfollowed. Specifically, the plates were removed from the incubator andplaced on the bench to cool for 10 minutes. The volumes of additionsneeded were calculated based upon information provided by themanufacturer. An Amplifier Working Solution was prepared by making a1:100 dilution of the Amplifier Concentrate (20 fm/μl) in ALHybridization Buffer. The hybridization mixture was removed from theplates and washed twice with Wash A. 50 μl of Amplifier Working Solutionwas added to each well and the wells were incubated at 53° C. for 30minutes. The plates were then removed from the incubator and allowed tocool for 10 minutes. The Label Probe Working Solution was prepared bymaking a 1:100 dilution of Label Concentrate (40 pmoles/μl) in ALHybridization Buffer. After the 10-minute cool-down period, theamplifier hybridization mixture was removed and the plates were washedtwice with Wash A. 50 μl of Label Probe Working Solution was added toeach well and the wells were incubated at 53° C. for 15 minutes. Aftercooling for 10 minutes, the Substrate was warmed to room temperature.Upon addition of 3 μl of Substrate Enhancer to each ml of Substrateneeded for the assay, the plates were allowed to cool for 10 minutes,the label hybridization mixture was removed, and the plates were washedtwice with Wash A and three times with Wash D. 50 μl of the SubstrateSolution with Enhancer was added to each well. The plates were incubatedfor 30 minutes at 37° C. and RLU was read in an appropriate luminometer.

[4131] The replicates were averaged and the coefficient of variation wasdetermined. The measure of activity of the fold increase over thenegative control (Protein 32/HEPES buffer described above) value wasindicated by chemiluminescence units (RLU). The results are consideredpositive if the PRO polypeptide exhibits at least a two-fold value overthe negative buffer control. Negative control=1.00 RLU at 1.00%dilution. Positive control=8.39 RLU at 1.00% dilution.

[4132] The following PRO polypeptides tested positive in this assay:PRO1274, PRO1294, PRO1304 and PRO1130.

Example 143 Gene Amplification

[4133] This example shows that the PRO1295-, PRO1293-, PRO1265-,PRO1303-, PRO1269-, PRO1410-, PRO1317-, PRO1780-, PRO1555-, PRO1755-,PRO1558-, PRO1759- and PRO1788-encoding genes are amplified in thegenome of certain human lung, colon and/or breast cancers and/or celllines. Amplification is associated with overexpression of the geneproduct, indicating that the polypeptides are useful targets fortherapeutic intervention in certain cancers such as colon, lung, breastand other cancers. Therapeutic agents may take the form of antagonistsof PRO1295, PRO1293, PRO1265, PRO1303, PRO1269, PRO1410, PRO1317,PRO1780, PRO1555, PRO1755, PRO1558, PRO1759 and PRO1788 polypeptides,for example, murine-human chimeric, humanized or human antibodiesagainst a PRO1295, PRO1293, PRO1265, PRO1303, PRO1269, PRO1410, PRO1317,PRO1780, PRO1555, PRO1755, PRO1558, PRO1759 or PRO1788 polypeptide.

[4134] The starting material for the screen was genomic DNA isolatedfrom a variety of cancers. The DNA is quantitated precisely, e.g.,fluorometrically. As a negative control, DNA was isolated from the cellsof ten normal healthy individuals which was pooled and used as assaycontrols for the gene copy in healthy individuals (not shown). The 5′nuclease assay (for example, TaqMan™) and real-time quantitative PCR(for example, ABI Prizm7700 Sequence Detection System™(Perkin Elmer,Applied Biosystems Division, Foster City, Calif.)), were used to findgenes potentially amplified in certain cancers. The results were used todetermine whether the DNA encoding PRO1295, PRO1293, PRO1265, PRO1303,PRO1269, PRO1410, PRO1317, PRO1780, PRO1555, PRO1755, PRO1558, PRO1759and PRO1788 is over-represented in any of the primary lung or coloncancers or cancer cell lines or breast cancer cell lines that werescreened. The primary lung cancers were obtained from individuals withtumors of the type and stage as indicated in Table 7. An explanation ofthe abbreviations used for the designation of the primary tumors listedin Table 7 and the primary tumors and cell lines referred to throughoutthis example has been given hereinbefore.

[4135] The results of the TaqMan™ are reported in delta (Δ) Ct units.One unit corresponds to 1 PCR cycle or approximately a 2-foldamplification relative to normal, two units corresponds to 4-fold, 3units to 8-fold amplification and so on. Quantitation was obtained usingprimers and a TaqManm fluorescent probe derived from the PRO1295-,PRO1293-, PRO1265-, PRO1303-, PRO1269-, PRO1410-, PRO1317-, PRO1780-,PRO1555-, PRO1755-, PRO1558-, PRO1759- and PRO1788-encoding gene.Regions of PRO1295, PRO1293, PRO1265, PRO1303, PRO1269, PRO1410,PRO1317, PRO1780, PRO1555, PRO1755, PRO1558, PRO1759 and PRO1788 whichare most likely to contain unique nucleic acid sequences and which areleast likely to have spliced out introns are preferred for the primerand probe derivation, e.g., 3′-untranslated regions. The sequences forthe primers and probes (forward, reverse and probe) used for thePRO1295, PRO1293, PRO1265, PRO1303, PRO1269, PRO1410, PRO1317, PRO1780,PRO1555, PRO1755, PRO1558, PRO1759 and PRO1788 gene amplificationanalysis were as follows: PRO1295 (DNA59218-1559) forward:5′-AGGACTTGCCCTCAGGAA-3′ (SEQ ID NO:432) reverse:5′-CGCAGGACAGTTGTGAAAATA-3′ (SEQ ID NO:433) probe:5′-ATGACGCTCGTCGAAGGCCAC-3′ (SEQ ID NO:434) PRO1293 (DNA60618-1557)forward: 5′-CCCACCTGTACCACCATGT-3′ (SEQ ID NO:435) probe:5′-ACTCCAGGCACCATCTGTTCTCCC-3′ (SEQ ID NO:436) reverse:5′-AAGGGCTGGCATTCAAGTU-3′ (SEQ ID NO:437) PRO1265 (DNA60764-1533)forward: 5′-TGACCTGGCAAAGGAAGAA-3′ (SEQ ID NO:438) probe:5′-CAGCCACCCTCCAGTCCAAGG-3′ (SEQ ID NO:439) reverse:5′-GGGTCGTGTTTTGGAGAGA-3′ (SEQ ID NO:440) PRO1303 (DNA65409-1566)forward: 5′-CTGGCCCTCAGAGCACCAAT-3′ (SEQ ID NO:441) probe:5′-TCCTCCATCACTTCCCCTAGCTCCA-3′ (SEQ ID NO:442) reverse:5′-CTGGCAGGAGTTAAAGTTCCAAGA-3′ (SEQ ID NO:443) PRO1269 (DNA66520-1536)forward: 5′-AAAGGACACCGGGATGTG-3′ (SEQ ID NO:444) probe:5′-AGCGTACACTCTCTCCAGGCAACCAG-3′ (SEQ ID NO:445) reverse:5′-CAATTCTGGATGAGGTGGTAGA-3′ (SEQ ID NO:446) PRO1410 (DNA68874-1622)forward: 5′-CAGGACTGAGCGCTTGTTTA-3′ (SEQ ID NO:447) probe:5′-CAAAGCGCCAAGTACCGGACC-3′ (SEQ ID NO:448) reverse:5′-CCAGACCTCAGCCAGGAA-3′ (SEQ ID NO:449) PRO1317 (DNA71166-1685)forward: 5′-CCCTAGCTGACCCCTTCA-3′ (SEQ ID NO:450) reverse:5′-TCTGACAAGCAGTTTTCTGAATC-3′ (SEQ ID NO:451) probe:5′-CTCTCCCCCTCCCTTTTCCTTTGTTT-3′ (SEQ ID NO:452) PRO1780 (DNA71169-1709)forward: 5′-CTCTGGTGCCCACAGTGA-3′ (SEQ ID NO:453) probe:5′-CCATGCCTGCTCAGCCAAGAA-3′ (SEQ ID NO:454) reverse:5′-CAGGAAATCTGGAAACCTACAGT-3′ (SEQ ID NO:455) PRO1555 (DNA73744-1665)forward: 5′-CCTTGAAAAGGACCCAGTTT-3′ (SEQ ID NO:456) probe:5′-ATGAGTCGCACCTGCTGTTCCC-3′ (SEQ ID NO:457) reverse:5′-TAGCAGCTGCCCTTGGTA-3′ (SEQ ID NO:458) forward:5′-AACAGCAGGTGCGACTCATCTA-3′ (SEQ ID NO:459) probe:5′-TGCTAGGCGACGACACCCAGACC-3′ (SEQ ID NO:460) reverse:5′-TGGACACGTGGCAGTGGA-3′ (SEQ ID NO:461) PRO1755 (DNA76396-1698)forward: 5′-TCATGGTCTCGTCCCATTC-3′ (SEQ ID NO:462) probe:5′-CACCATTTGTTTCTCTGTCTCCCCATC-3′ (SEQ ID NO:463) reverse:5′-CCGGCATCCTTGGAGTAG-3′ (SEQ ID NO:464) PRO1788 (DNA77652-2505)forward: 5′-TCCCCATTAGCACAGGAGTA-3′ (SEQ ID NO:465) probe:5′-AGGCTCTTGCCTGTCCTGCTGCT-3′ (SEQ ID NO:466) reverse:5′-GCCCAGAGTCCCACTTGT-3′ (SEQ ID NO:467) PRO1558 (DNA71282-1668)forward: 5′-ACTGCTCCGCCTACTACGA-3′ (SEQ ID NO:468) probe:5′-AGGCATCCTCGCCGTCCTCA-3′ (SEQ ID NO:469) reverse:5′-AAGGCCAAGGTGAGTCCAT-3′ (SEQ ID NO:470) forward:5′-CGAGTGTGTGCGAAACCTAA-3′ (SEQ ID NO:471) probe:5′-TCAGGGTCTACATCAGCCTCCTGC-3′ (SEQ ID NO:472) reverse:5′-AAGGCCAAGGTGAGTCCAT-3′ (SEQ ID NO:473) PRO1759 (DNA76531-1701)forward: 5′-CCTACTGAGGAGCCCTATGC-3′ (SEQ ID NO:474) probe:5′-CCTGAGCTGTAACCCCACTCCAGG-3′ (SEQ ID NO:231) reverse:5′-AGAGTCTGTCCCAGCTATCTTGT-3′ (SEQ ID NO:232)

[4136] The 5′ nuclease assay reaction is a fluorescent PCR-basedtechnique which makes use of the 5′ exonuclease activity of Taq DNApolymerase enzyme to monitor amplification in real time. Twooligonucleotide primers are used to generate an amplicon typical of aPCR reaction. A third oligonucleotide, or probe, is designed to detectnucleotide sequence located between the two PCR primers. The probe isnon-extendible by Taq DNA polymerase enzyme, and is labeled with areporter fluorescent dye and a quencher fluorescent dye. Anylaser-induced emission from the reporter dye is quenched by thequenching dye when the two dyes are located close together as they areon the probe. During the amplification reaction, the Taq DNA polymeraseenzyme cleaves the probe in a template-dependent manner. The resultantprobe fragments disassociate in solution, and signal from the releasedreporter dye is free from the quenching effect of the secondfluorophore. One molecule of reporter dye is liberated for each newmolecule synthesized, and detection of the unquenched reporter dyeprovides the basis for quantitative interpretation of the data.

[4137] The 5′ nuclease procedure is run on a real-time quantitative PCRdevice such as the ABI Prism 7700TM Sequence Detection. The systemconsists of a thermocycler, laser, charge-coupled device (CCD) cameraand computer. The system amplifies samples in a 96-well format on athermocycler. During amplification, laser-induced fluorescent signal iscollected in real-time through fiber optics cables for all 96 wells, anddetected at the CCD. The system includes software for running theinstrument and for analyzing the data.

[4138] 5′ Nuclease assay data are initially expressed as Ct, or thethreshold cycle. This is defined as the cycle at which the reportersignal accumulates above the background level of fluorescence. The ΔCtvalues are used as quantitative measurement of the relative number ofstarting copies of a particular target sequence in a nucleic acid samplewhen comparing cancer DNA results to normal human DNA results.

[4139] Table 7 describes the stage, T stage and N stage of variousprimary tumors which were used to screen the PRO1295, PRO1293, PRO1265,PRO1303, PRO1269, PRO1410, PRO1317, PRO1780, PRO1555, PRO1755, PRO1558,PRO1759 and PRO1788 compounds of the invention. TABLE 7 Primary Lung andColon Tumor Profiles Primary Tumor Stage Other Stage Dukes Stage T StageN Stage Human lung tumor AdenoCa (SRCC724) [LT1] IIA T1 N1 Human lungtumor SqCCa (SRCC725) [LT1a] IIB T3 N0 Human lung tumor AdenoCa(SRCC726) [LT2] IB T2 N0 Human lung tumor AdenoCa (SRCC727) [LT3] IIIAT1 N2 Human lung tumor AdenoCa (SRCC728) [LT4] IB T2 N0 Human lung tumorSqCCa (SRCC729) [LT6] IB T2 N0 Human lung tumor Aden/SqCCa (SRCC730)[LT7] IA T1 N0 Human lung tumor AdenoCa (SRCC731) [LT9] IB T2 N0 Humanlung tumor SqCCa (SRCC732) [LT10] IIB T2 N1 Human lung tumor SqCCa(SRCC733) [LT11] IIA T1 N1 Human lung tumor AdenoCa (SRCC734) [LT12] IVT2 N0 Human lung tumor AdenoSqCCa (SRCC735) [LT13] IB T2 N0 Human lungtumor SqCCa (SRCC736) [LT15] IB T2 N0 Human lung tumor SqCCa (SRCC737)[LT16] IB T2 N0 Human lung tumor SqCCa (SRCC738) [LT17] IIB T2 N1 Humanlung tumor SqCCa (SRCC739) [LT18] IB T2 N0 Human lung tumor SqCCa(SRCC740) [LT19] IB T2 N0 Human lung tumor LCCa (SRCC741) [LT21] IIB T3N1 Human lung AdenoCa (SRCC811) [LT22] 1A T1 N0 Human colon AdenoCa(SRCC742) [CT2] M1 D pT4 N0 Human colon AdenoCa (SRCC743) [CT3] B pT3 N0Human colon AdenoCa (SRCC744) [CT8] B T3 N0 Human colon AdenoCa(SRCC745) [CT10] A pT2 N0 Human colon AdenoCa (SRCC746) [CT12] MO, R1 BT3 N0 Human colon AdenoCa (SRCC747) [CT14] pMO, RO B pT3 pN0 Human colonAdenoCa (SRCC748) [CT15] M1, R2 D T4 N2 Human colon AdenoCa (SRCC749)[CT16] pMO B pT3 pN0 Human colon AdenoCa (SRCC750) [CT17] C1 pT3 pN1Human colon AdenoCa (SRCC751) [CT1] MO, R1 B pT3 N0 Human colon AdenoCa(SRCC752) [CT4] B pT3 M0 Human colon AdenoCa (SRCC753) [CT5] G2 C1 pT3pN0 Human colon AdenoCa (SRCC754) [CT6] pMO, RO B pT3 pN0 Human colonAdenoCa (SRCC755) [CT7] G1 A pT2 pN0 Human colon AdenoCa (SRCC756) [CT9]G3 D pT4 pN2 Human colon AdenoCa (SRCC757) [CT11] B T3 N0 Human colonAdenoCa (SRCC758) [CT18] MO, RO B pT3 pN0

DNA Preparation

[4140] DNA was prepared from cultured cell lines, primary tumors, andnormal human blood. The isolation was performed using purification kit,buffer set and protease and all from Qiagen, according to themanufacturer's instructions and the description below.

Cell Culture Lysis

[4141] Cells were washed and trypsinized at a concentration of 7.5×10⁸per tip and pelleted by centrifuging at 1000 rpm for 5 minutes at 4° C.,followed by washing again with ½ volume of PBS and recentrifugation. Thepellets were washed a third time, the suspended cells collected andwashed 2× with PBS. The cells were then suspended into 10 ml PBS. BufferC1 was equilibrated at 4° C. Qiagen protease #19155 was diluted into6.25 ml cold ddH₂O to a final concentration of 20 mg/ml and equilibratedat 4° C. 10 ml of G2 Buffer was prepared by diluting Qiagen RNAse Astock (100 mg/ml) to a final concentration of 200 μg/ml.

[4142] Buffer C1 (10 ml, 4° C.) and ddH2O (40 ml, 4° C.) were then addedto the 10 ml of cell suspension, mixed by inverting and incubated on icefor 10 minutes. The cell nuclei were pelleted by centrifuging in aBeckman swinging bucket rotor at 2500 rpm at 4° C. for 15 minutes. Thesupernatant was discarded and the nuclei were suspended with a vortexinto 2 ml Buffer C1 (at 4° C.) and 6 ml ddH₂O, followed by a second 4°C. centrifugation at 2500 rpm for 15 minutes. The nuclei were thenresuspended into the residual buffer using 200 μl per tip. G2 buffer (10ml) was added to the suspended nuclei while gentle vortexing wasapplied. Upon completion of buffer addition, vigorous vortexing wasapplied for 30 seconds. Quiagen protease (200 μl, prepared as indicatedabove) was added and incubated at 50° C. for 60 minutes. The incubationand centrifugation were repeated until the lysates were clear (e.g.,incubating additional 30-60 minutes, pelleting at 3000×g for 10 min., 4°C.).

Solid Human Tumor Sample Preparation and Lysis

[4143] Tumor samples were weighed and placed into 50 ml conical tubesand held on ice. Processing was limited to no more than 250 mg tissueper preparation (1 tip/preparation). The protease solution was freshlyprepared by diluting into 6.25 ml cold ddH₂O to a final concentration of20 mg/ml and stored at 4° C. G2 buffer (20 ml) was prepared by dilutingDNAse A to a final concentration of 200 mg/ml (from 100 mg/ml stock).The tumor tissue was homogenated in 19 ml G2 buffer for 60 seconds usingthe large tip of the polytron in a laminar-flow TC hood in order toavoid inhalation of aerosols, and held at room temperature. Betweensamples, the polytron was cleaned by spinning at 2×30 seconds each in 2LddH₂O, followed by G2 buffer (50 ml). If tissue was still present on thegenerator tip, the apparatus was disassembled and cleaned.

[4144] Quiagen protease (prepared as indicated above, 1.0 ml) was added,followed by vortexing and incubation at 50° C. for 3 hours. Theincubation and centrifugation were repeated until the lysates were clear(e.g., incubating additional 30-60 minutes, pelleting at 3000×g for 10min., 4° C.).

Human Blood Preparation and Lysis

[4145] Blood was drawn from healthy volunteers using standard infectiousagent protocols and citrated into 10 ml samples per tip. Quiagenprotease was freshly prepared by dilution into 6.25 ml cold ddH₂O to afinal concentration of 20 mg/ml and stored at 4° C. G2 buffer wasprepared by diluting RNAse A to a final concentration of 200 μg/ml from100 mg/ml stock. The blood (10 ml) was placed into a 50 ml conical tubeand 10 ml C1 buffer and 30 ml ddH₂O (both previously equilibrated to 4°C.) were added, and the components mixed by inverting and held on icefor 10 minutes. The nuclei were pelleted with a Beckman swinging bucketrotor at 2500 rpm, 4° C. for 15 minutes and the supernatant discarded.With a vortex, the nuclei were suspended into 2 ml C1 buffer (4° C.) and6 ml ddH₂O (4° C). Vortexing was repeated until the pellet was white.The nuclei were then suspended into the residual buffer using a 200 μltip. G2 buffer (10 ml) was added to the suspended nuclei while gentlyvortexing, followed by vigorous vortexing for 30 seconds. Quiagenprotease was added (200 μl) and incubated at 50° C. for 60 minutes. Theincubation and centrifugation were repeated until the lysates were clear(e.g., incubating additional 30-60 minutes, pelleting at 3000×g for 10min., 4° C.).

Purification of Cleared Lysates

[4146] (1) Isolation of genomic DNA:

[4147] Genomic DNA was equilibrated (1 sample per maxi tip preparation)with 10 ml QBT buffer. QF elution buffer was equilibrated at 50° C. Thesamples were vortexed for 30 seconds, then loaded onto equilibrated tipsand drained by gravity. The tips were washed with 2×15 ml QC buffer. TheDNA was eluted into 30 ml silanized, autoclaved 30 ml Corex tubes with15 ml QF buffer (50° C). Isopropanol (10.5 ml) was added to each sample,the tubes covered with parafin and mixed by repeated inversion until theDNA precipitated. Samples were pelleted by centrifugation in the SS-34rotor at 15,000 rpm for 10 minutes at 4° C. The pellet location wasmarked, the supernatant discarded, and 10 ml 70% ethanol (4° C.) wasadded. Samples were pelleted again by centrifugation on the SS-34 rotorat 10,000 rpm for 10 minutes at 4° C. The pellet location was marked andthe supernatant discarded. The tubes were then placed on their side in adrying rack and dried 10 minutes at 37° C., taking care not to overdrythe samples.

[4148] After drying, the pellets were dissolved into 1.0 ml TE (pH 8.5)and placed at 50° C. for 1-2 hours. Samples were held overnight at 4° C.as dissolution continued. The DNA solution was then transferred to 1.5mL tubes with a 26 gauge needle on a tuberculin syringe. The transferwas repeated 5× in order to shear the DNA. Samples were then placed at50° C. for 1-2 hours.

[4149] (2) Quantitation of genomic DNA and preparation for geneamplification assay:

[4150] The DNA levels in each tube were quantified by standard A₂₆₀/A₂₈₀spectrophotometry on a 1:20 dilution (5 μl DNA+95 μl ddH₂O) using the0.1 ml quartz cuvettes in the Beckman DU640 spectrophotometer. A₂₆₀/A₂₈₀ratios were in the range of 1.8-1.9. Each DNA sample was then dilutedfurther to approximately 200 ng/ml in TE (pH 8.5). If the originalmaterial was highly concentrated (about 700 ng/μl), the material wasplaced at 50° C. for several hours until resuspended.

[4151] Fluorometric DNA quantitation was then performed on the dilutedmaterial (20-600 ng/ml) using the manufacturer's guidelines as modifiedbelow. This was accomplished by allowing a Hoeffer DyNA Quant 200fluorometer to warm-up for about 15 minutes. The Hoechst dye workingsolution (#H33258, 10 μl, prepared within 12 hours of use) was dilutedinto 100 ml 1× TNE buffer. A 2 ml cuvette was filled with thefluorometer solution, placed into the machine, and the machine waszeroed. pGEM 3Zf(+) (2 μl, lot #360851026) was added to 2 ml offluorometer solution and calibrated at 200 units. An additional 2 μl ofpGEM 3Zf(+) DNA was then tested and the reading confirmed at 400+/−10units. Each sample was then read at least in triplicate. When 3 sampleswere found to be within 10% of each other, their average was taken andthis value was used as the quantification value.

[4152] The fluorometricly determined concentration was then used todilute each sample to 10 ng/μl in ddH₂O.

[4153] This was done simultaneously on all template samples for a singleTaqMan plate assay, and with enough material to run 500-1000 assays. Thesamples were tested in triplicate with Taqman™ primers and probe bothB-actin and GAPDH on a single plate with normal human DNA andno-template controls. The diluted samples were used provided that the CTvalue of normal human DNA subtracted from test DNA was +/−1 Ct. Thediluted, lot-qualified genomic DNA was stored in 1.0 ml aliquots at −80°C. Aliquots which were subsequently to be used in the gene amplificationassay were stored at 4° C. Each 1 ml aliquot is enough for 8-9 plates or64 tests

Gene Amplification Assay

[4154] The PRO1295, PRO1293, PRO1265, PRO1303, PRO1269, PRO1410,PRO1317, PRO1780, PRO1555, PRO1755, PRO1558, PRO1759 and PRO1788compounds of the invention were screened in the following primary tumorsand the resulting ΔCt values which are ≧1.0 are reported in Table 8.TABLE 8 ΔCt values in lung and colon primary tumors and cell line modelsPrimary Tumors or Cell PRO PRO PRO PRO PRO PRO PRO PRO PRO PRO PRO PROPRO lines 1293 1269 1410 1755 1780 1788 1303 1555 1265 1317 1295 15581759 LT1 — — — — — — — — — 1.15 — — — LT1-a — — — — — — — — — 1.49 — — —LT3 — — — — — — — — 1.04 — — — — LT4 — — — — 1.16 — — — — — — — — LT7 —— — — 1.02 — — — — — — — — LT9 — — — — — — — — — 1.26 — — — LT10 — — — —— — — — — 1.68 — — — LT12 — — — — — — — — 2.17 — — — — LT13 — — 1.12 — —— 1.42 4.20 2.24 — — — — 1.42 4.45 LT15 — 1.22 2.10 — — — 1.17 1.36 3.511.16 — — — 1.82 1.15 LT16 — 1.14 1.44 1.36 — — 1.42 3.71 3.32 — — — —1.45 3.99 LT17 — 1.26 — — — — — — 1.02 1.74 — — — LT18 — — — 1.18 — — —— — — — — — CT2 — — 2.36 2.35 — — — — — — — — — CT3 — — 1.09 — — 1.35 —— — — — — — CT8 — — — 1.64 — 1.26 — — — — — — — CT10 — — 1.41 2.05 —1.37 — — — — — — — CT12 — — — 1.15 — 1.24 — — — — — — — CT14 — — 1.461.40 — 2.58 — — — — — — — CT15 — — — — — — — 1.34 — — — — — 1.62 CT16 —— — — — — 1.13 1.04 — — — — — 1.05 CT17 — — — — — — — 1.16 — — — — — CT1— — — — — 1.09 — — — — — — — CT4 — — — — — 1.22 — — — — — — — CT5 — —2.14 — — — — — — — — — — CT9 — — — — — 1.52 — — — — — — — CT11 — — 1.29— — — — — — — — — — A549 — — — — — — 1.20 2.17 — — — — — 2.11 Calu-1 — —— — — — — 1.39 — — — — — Calu-6 — — — — — — — 1.12 — — — — — H441 — — —— — — — 2.06 — — — — — H460 — — — — — — — 1.88 — — — — — SKMES — — — — —— — 1.90 — — — — — 1 SW620 — — — — — — — 2.24 — — — — — Colo320 — — — —— — — 2.21 — — — — — 2.24 HT29 — — 1.22 — — — — — — — — — — HCT116 — — —— — — — 2.46 — — — — — 2.66 LT22 — — — 1.26 1.07 — — — — 2.69 — — — HF-— — — — — — — 2.63 — — — — — 000716 2.73 HF- — — — — — — — 2.58 — — — —— 000733 2.71 1.39 HF- — — — — — — — 4.99 — — — — — 000611 HF- 2.33 — —— — — — 3.13 — — 1.49 — — 000539 2.55 HF- — — — — — — — 1.32 — — — — —000575 HF — — — — — — — — — — 1.09 — — 000698 HF- — — — — — — — 1.59 — —1.11 — — 000545 1.68 HF- — — — — — — — 1.37 — — 1.27 — — 000631 HF- 1.71— — — — — — 3.63 — — 1.97 1.39 1.11 000840 HF- — — — — — — — 1.99 — — —1.24 — 000842 HF- 1.13 — — — — — — — — — — 1.01 1.32 000795 HF- — — — —— — — — — — — 1.50 — 001294 HF- — — — — — — — — — — — 2.88 1.51 001296HF- — — — — — — — — — — — 1.37 — 001299

PRO1265

[4155] PRO1265 (DNA60764-1533) was also reexamined along with selectedtumors from the above initial screen with framework mapping. Table 9indicates the chromosomal mapping of the framework markers that wereused in the present example. The framework markers are locatedapproximately every 20 megabases and were used to control aneuploidy.

[4156] PRO1265 was also reexamined with epicenter mapping. The markersindicated in Table 10 are located in close proximity (in the genome) toDNA60764-1533, and are used to assess the relative amplification in theimmediate vicinity of Chromosome 19 wherein the molecule is located. Thedistance between individual markers is measured in centirays (cR), whichis a radiation breakage unit approximately equal to a 1% chance of abreakage between two markers. One cR is very roughly equivalent to 20kilobases. The marker SHGC-33698 is closest to DNA60764-1533. TABLE 9Framework Markers Along Chromosome 19 Map Position on Chromosome 19Stanford Human Genome Center Marker Name S12  AFMa107xc9 S50  SHGC-31335S105 SHGC-34102 S155 SHGC-16175

[4157] TABLE 10 Epicenter Markers Along Chromosome 19 used forDNA60764-1533 Map Position on Stanford Human Genome Center Distance toChromosome 19 Marker Name next Marker (cR) DNA34353 — maps to S158DNA40620 — maps to S160 DNA54002 — maps to S160 S160 SHGC-34723 21DNA60764 — — S161 SHGC-30929 15 S162 SHGC-10328 17 S163 AFMa115wg5 —

[4158] The ΔCt values of the above described framework markers alongChromosome 19 relative to PRO1265 are indicated for selected tumors inTable 11. TABLE 11 Amplification of framework markers relative toDNA60764-1533 (ΔCt) Framework Markers DNA60764- Tumor S12 1533 S50 S105S155 LT1 0.16 0.06 −0.42 0.11 −1.56 LT1a 0.05 −0.27 0.17 0.40 0.00 LT20.48 0.41 0.52 0.13 −0.36 LT3 0.27 0.83 0.11 0.50 1.04 LT4 0.48 0.670.20 0.56 −0.35 LT6 0.72 0.74 0.32 0.35 0.24 LT7 0.82 0.85 0.95 0.950.75 LT9 0.72 0.61 0.19 0.64 −0.35 LT10 0.82 0.98 0.62 0.53 0.32 LT110.13 0.25 0.55 −0.34 0.70 LT12 0.04 0.60 0.21 −0.17 2.17 LT13 −0.06 0.57−0.30 −0.05 2.24 LT15 −0.03 −0.77 0.12 −0.04 3.51 LT16 0.46 1.37 0.510.23 3.32 LT17 0.37 0.74 0.21 0.22 1.02 LT18 0.39 0.57 0.11 0.16 0.52LT22 0.79 0.76 −0.05 0.16 0.59

DISCUSSION AND CONCLUSION PRO1269 (DNA66520-1536)

[4159] The ΔCt values for DNA66520-1536 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA66520-1536 encoding PRO1269 occurred in primary lung tumors: LT15,LT16 and LT17. Because amplification of DNA66520-1536 occurs in variouslung tumors, it is highly probable to play a significant role in tumorformation or growth. As a result, antagonists (e.g., antibodies)directed against the protein encoded by DNA66520-1536 (PRO1269) would beexpected to have utility in cancer therapy.

PRO1410 (DNA68874-1622)

[4160] The ΔCt values for DNA68874-1622 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.the above data indicates that significant amplification of nucleic acidDNA68874-1622 encoding PRO1410 occurred: (1) in primary lung tumors:LT13, LT15 and LT16; (2) in primary colon tumors: CT2, CT3, CT5, CT10,CT11, and CT14; and (3) in colon cell line HT29. Because amplificationof DNA68874-1622 occurs in various lung and colon tumors, it is highlyprobable to play a significant role in tumor formation or growth. As aresult, antagonists (e.g., antibodies) directed against the proteinencoded by DNA68874-1622 (PRO1410) would be expected to have utility incancer therapy.

PRO1755 (DNA76396-1698)

[4161] The ΔCt values for DNA76396-1698 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA76396-1698 encoding PRO1755 occurred: (1) in primary lung tumors:LT16, LT18 and LT22; and (2) in primary colon tumors: CT2, CT8, CT10,CT12, and CT14. Because amplification of DNA76396-1698 occurs in variouslung and colon tumors, it is highly probable to play a significant rolein tumor formation or growth. As a result, antagonists (e.g.,antibodies) directed against the protein encoded by DNA76396-1698(PRO1755) would be expected to have utility in cancer therapy.

PRO1780 (DNA71169-1709)

[4162] The ΔCt values for DNA71169-1709 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA71169-1709 encoding PRO1780 occurred in primary lung tumors: LT4, LT7and LT22. Because amplification of DNA71169-1709 occurs in various lungtumors, it is highly probable to play a significant role in tumorformation or growth. As a result, antagonists (e.g., antibodies)directed against the protein encoded by DNA71169-1709 (PRO1780) would beexpected to have utility in cancer therapy.

PRO1788 (DNA77652-2505)

[4163] The ΔCt values for DNA77652-2505 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA77652-2505 encoding PRO1788 occurred in primary colon tumors: CT1,CT3, CT4, CT8, CT9, CT10, CT12, and CT14. Because amplification ofDNA77652-2505 occurs in various colon tumors, it is highly probable toplay a significant role in tumor formation or growth. As a result,antagonists (e.g., antibodies) directed against the protein encoded byDNA77652-2505 (PRO1788) would be expected to have utility in cancertherapy.

PRO1295 (DNA59218-1559)

[4164] The ΔCt values for DNA59218-1559 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA59218-1559 encoding PRO1295 occurred: (1) in primary lung tumors:HF-000631 and HF-000840; (2) colon tumor centers: HF-000539 andHF-000698; and (3) in breast tumor center HF-000545. Becauseamplification of DNA59218-1559 occurs in various tumors, it is highlyprobable to play a significant role in tumor formation or growth. As aresult, antagonists (e.g., antibodies) directed against the proteinencoded by DNA59218-1559 (PRO1295) would be expected to have utility incancer therapy.

PRO1293 (DNA60618-1557)

[4165] The ΔCt values for DNA60618-1557 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA60618-1557 encoding PRO1293 occurred: (1) in primary lung tumorHF-000840; and (2) in colon tumor centers: HF-000539 and HF-000795.Because amplification of DNA60618-1557 occurs in various lung and colontumors, it is highly probable to play a significant role in tumorformation or growth. As a result, antagonists (e.g., antibodies)directed against the protein encoded by DNA60618-1557 (PRO1293) would beexpected to have utility in cancer therapy.

PRO1303 (DNA65409-1566)

[4166] The ΔCt values for DNA65409-1566 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA65409-1566 encoding PRO1303 occurred: (1) in primary lung tumors:LT13, LT15 and LT16; (2) in lung cell line A549; and (3) in colon tumorCT16. Because amplification of DNA65409-1566 occurs in various tumors,it is highly probable to play a significant role in tumor formation orgrowth. As a result, antagonists (e.g., antibodies) directed against theprotein encoded by DNA65409-1566 (PRO1566) would be expected to haveutility in cancer therapy.

PRO1555 (DNA73744-1665)

[4167] The ΔCt values for DNA73744-1665 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA73744-1665 encoding PRO1555 occurred: (1) in primary lung tumors:LT13, LT15, LT16, HF-000631, HF-000840, and HF-000842; (2) in lung celllines: A549, Calu-1, Calu-6, H441, H460, and SKMES1; (3) in primarycolon tumors: CT15, CT16, CT17, and colon tumor centers HF-000539 andHF-000575; (4) in colon cell lines: SW620, Colo320 and HCT116; (5) inbreast tumor center HF-000545; (6) in kidney tumor center HF-000611; and(7) in testis tumor margin HF-000716 and testis tumor center HF-000733.Because amplification of DNA73744-1665 occurs in various tumors, it ishighly probable to play a significant role in tumor formation or growth.As a result, antagonists (e.g., antibodies) directed against the proteinencoded by DNA73744-1665 (PRO1555) would be expected to have utility incancer therapy.

PRO1265 (DNA60764-1533)

[4168] The ΔCt values for DNA60764-1533 in a variety of lung tumors arereported above. A ΔCt value of >1 was typically used as the thresholdvalue for amplification scoring, as this represents a doubling of genecopy. The above data indicates that significant amplification ofDNA60765-1533 occurred in primary lung tumors LT3, LT12, LT13, LT15,LT16 and LT17. The ΔCt values of these hits are 1.03, 2.17, 2.24, 3.51,3.32 and 1.02. This represents an increase in gene copy of approximately2.04, 4.50, 4.72, 11.39, 9.99 and 2.03.

[4169] Amplification has also been confirmed framework mapping forDNA60764-1533 in LT16. The reported ΔCt value was 1.37, which representsa 2.58 fold increase in gene copy relative to normal tissue. Epicentermapping has also confirmed amplification of DNA60764-1533 in LT12, LT13,LT15, LT16, CT1, CT4, CT5, CT5, CT7 and CT 11. These tumors report ΔCtvalues of 2.35, 2.37, 3.88, 3.32 in the lung tumors and 1.74, 1.86,3.28, 1.29 and 2.32 in the colon tumors. Relative to normal tissue, thisrepresents an increase in gene copy of approximately 5.10, 5.17, 14.72and 9.98 in the lung tumors and 3.34, 3.63, 9.71, 2.45 and 4.99 in thecolon tumors.

[4170] In contrast, the amplification of the closest known frameworkmarkers, epicenter markers and the comparison sequences does not occurto a greater extent than that of DNA60764-1533. This strongly suggeststhat DNA60764-1533 is the gene responsible for the amplification of theparticular region in Chromosome 19. Because amplification ofDNA60764-1533 occurs in various lung and colon tumors, it is highlyprobably to play a significant role in tumor formation or growth. As aresult, antagonists (e.g., antibodies) directed against the proteinencoded by DNA60764-1533 would be expected to have utility in cancertherapy.

PRO1317 (DNA71166-1685)

[4171] The ΔCt values for DNA71166-1685 in a variety of tumors arereported above. A ΔCt of >1 was typically used as the threshold valuefor amplification scoring, as this represents a doubling of gene copy.The above data indicates that significant amplification of nucleic acidDNA71166-1685 encoding PRO1317 occurred in primary lung tumors LT1,LT1a, LT9, LT10, LT15, LT17 and LT22. Because amplification ofDNA71166-1685 occurs in various tumors, it is likely associated withtumor formation and/or growth. As a result, antagonists (e.g.,antibodies) directed against PRO1317 would be expected to be useful incancer therapy.

Summary

[4172] Because amplification of the various DNA's as described aboveoccurs in various tumors, they are likely associated with tumorformation and/or growth. As a result, antagonists (e.g., antibodies)directed against these polypeptides would be expected to be useful incancer therapy.

Example 144 Stimulatory Activity in Mixed Lymphocyte Reaction (MLR)Assay (Assay 24)

[4173] This example shows that certain polypeptides of the invention areactive as a stimulator of the proliferation of stimulated T-lymphocytes.Compounds which stimulate proliferation of lymphocytes are usefultherapeutically where enhancement of an immune response is beneficial. Atherapeutic agent may take the form of antagonists of the polypeptide ofthe invention, for example, murine-human chimeric, humanized or humanantibodies against the polypeptide.

[4174] The basic protocol for this assay is described in CurrentProtocols in Immunology, unit 3.12; edited by J E Coligan, A MKruisbeek, D H Marglies, E M Shevach, W Strober, National Insitutes ofHealth, Published by John Wiley & Sons, Inc.

[4175] More specifically, in one assay variant, peripheral bloodmononuclear cells (PBMC) are isolated from mammalian individuals, forexample a human volunteer, by leukopheresis (one donor will supplystimulator PBMCs, the other donor will supply responder PBMCs). Ifdesired, the cells are frozen in fetal bovine serum and DMSO afterisolation. Frozen cells may be thawed overnight in assay media (37° C.,5% CO₂) and then washed and resuspended to 3×10⁶ cells/ml of assay media(RPMI; 10% fetal bovine serum, 1% penicillin/streptomycin, 1% glutamine,1% HEPES, 1% non-essential amino acids, 1% pyruvate). The stimulatorPBMCs are prepared by irradiating the cells (about 3000 Rads).

[4176] The assay is prepared by plating in triplicate wells a mixtureof:

[4177] 100:1 of test sample diluted to 1% or to 0.1%,

[4178] 50:1 of irradiated stimulator cells, and

[4179] 50 1 of responder PBMC cells.

[4180] 100 microliters of cell culture media or 100 microliter ofCD4-IgG is used as the control. The wells are then incubated at 37° C.,5% CO₂ for 4 days. On day 5, each well is pulsed with tritiatedthymidine (1.0 mC/well; Amersham). After 6 hours the cells are washed 3times and then the uptake of the label is evaluated.

[4181] In another variant of this assay, PBMCs are isolated from thespleens of Balb/c mice and C57B6 mice. The cells are teased from freshlyharvested spleens in assay media (RPMI; 10% fetal bovine serum, 1%penicillin/streptomycin, 1% glutamine, 1% HEPES, 1% non-essential aminoacids, 1% pyruvate) and the PBMCs are isolated by overlaying these cellsover Lympholyte M (Organon Teknika), centrifuging at 2000 rpm for 20minutes, collecting and washing the mononuclear cell layer in assaymedia and resuspending the cells to 1×10⁷ cells/ml of assay media. Theassay is then conducted as described above.

[4182] Positive increases over control are considered positive withincreases of greater than or equal to 180% being preferred. However, anyvalue greater than control indicates a stimulatory effect for the testprotein.

[4183] The following PRO polypeptides tested positive in this assay:PRO1246 and PRO1343.

Example 145 Mouse Kidney Mesangial Cell Proliferation Assay (Assay 92)

[4184] This assay shows that certain polypeptides of the invention actto induce proliferation of mammalian kidney mesangial cells and,therefore, are useful for treating kidney disorders associated withdecreased mesangial cell function such as Berger disease or othernephropathies associated with Schanlein-Henoch purpura, celiac disease,dermatitis herpetiformis or Crohn disease. The assay is performed asfollows. On day one, mouse kidney mesangial cells are plated on a 96well plate in growth media (3:1 mixture of Dulbecco's modified Eagle'smedium and Ham's F12 medium, 95% fetal bovine serum, 5% supplementedwith 14 mM HEPES) and grown overnight. On day 2, PRO polypeptides arediluted at 2 concentrations(1% and 0.1%) in serum-free medium and addedto the cells. Control samples are serum-free medium alone. On day 4, 20μl of the Cell Titer 96 Aqueous one solution reagent (Progema) was addedto each well and the colormetric reaction was allowed to proceed for 2hours. The absorbance (OD) is then measured at 490 nm. A positive in theassay is anything 35 that gives an absorbance reading which is at least15% above the control reading.

[4185] The following polypeptide tested positive in this assay: PRO1265,PRO1244 and PRO1382.

Example 146 Induction of Pancreatic O-Cell Precursor Differentiation(Assay 89)

[4186] This assay shows that certain polypeptides of the invention actto induce differentiation of pancreatic β-cell precursor cells intomature pancreatic β-cells and, therefore, are useful for treatingvarious insulin deficient states in mammals, including diabetesmellitus. The assay is performed as follows. The assay uses a primaryculture of mouse fetal pancreatic cells and the primary readout is analteration in the expression of markers that represent either β-cellprecursors or mature β-cells. Marker expression is measured by real timequantitative PCR (RTQ-PCR); wherein the marker being evaluated isinsulin.

[4187] The pancreata are dissected from E14 embryos (CD1 mice). Thepancreata are then digested with collagenase/dispase in F12/DMEM at 37°C. for 40 to 60 minutes (collagenase/dispase, 1.37 mg/ml, BoehringerMannheim, #1097113). The digestion is then neutralized with an equalvolume of 5% BSA and the cells are washed once with RPMI1640. At day 1,the cells are seeded into 12-well tissue culture plates (pre-coated withlaminin, 20 μg/ml in PBS, Boehringer Mannheim, #124317). Cells frompancreata from 1-2 embryos are distributed per well. The culture mediumfor this primary cuture is 14F/1640. At day 2, the media is removed andthe attached cells washed with RPMI/1640. Two mils of minimal media areadded in addition to the protein to be tested. At day 4, the media isremoved and RNA prepared from the cells and marker expression analyzedby real time quantitative RT-PCR. A protein is considered to be activein the assay if it increases the expression of the relevant β-cellmarker as compared to untreated controls.

[4188] 14F11640 is RPMI1640 (Gibco) plus the following:

[4189] group A 1:1000

[4190] group B 1: 1000

[4191] recombinant human insulin 10 μg/ml

[4192] Aprotimni (50 μg/ml) 1:2000 (Boehringer manheim #981532)

[4193] Bovine pituitary extract (BPE) 60 μg/ml

[4194] Gentamycin 100 ng/ml

[4195] Group A: (in 10 ml PBS)

[4196] Transferrin, 100 mg (Sigma T2252)

[4197] Epidermal Growth Factor, 100μg (BRL 100004)

[4198] Triiodothyronine,10 μl of 5×10⁻⁶ M (Sigma T5516)

[4199] Ethanolamine, 100 μl of 10⁻¹ (Sigma E0135)

[4200] Phosphoethalamine, 100 μl of 10⁻¹ M (Sigma P0503)

[4201] Selenium, 4 μl of 10⁻¹ M (Aesar #12574)

[4202] Group C: (in 10 ml 100% ethanol)

[4203] Hydrocortisone, 2 μl of 5×10⁻³ M (Sigma #H0135)

[4204] Progesterone, 100 μl of 1×10⁻³ M (Sigma #P6149)

[4205] Forskolin, 500 μl of 20 mM (Calbiochem #344270)

[4206] Minimal media:

[4207] RPMI 1640plus transferrin (10 μg/ml), insulin (1 μg/ml),gentamycin (100 ng/ml), aprotinin(50 μg/ml) and BPE (15 μg/ml).

[4208] Defined media:

[4209] RPMI 1640 plus transferrin (10 μg/ml), insulin (1 μg/ml),gentamycin (100 ng/ml) and aprotinin (50 μg/ml).

[4210] The following polypeptides were positive in this assay: PRO1275and PRO1474.

Example 147 Fetal Hemoglobin Induction in an Erytlroblastic Cell Line(Assay 107)

[4211] This assay is useful for screening PRO polypeptides for theability to induce the switch from adult hemoglobin to fetal hemoglobinin an erythroblastic cell line. Molecules testing positive in this assayare expected to be useful for therapeutically treating various mammalianhemoglobin-associated disorders such as the various thalassemias. Theassay is performed as follows. Erythroblastic cells are plated instandard growth medium at 1000 cells/well in a 96 well format. PROpolypeptides are added to the growth medium at a concentration of 0.2%or 2% and the cells are incubated for 5 days at 37° C. As a positivecontrol, cells are treated with 100 μM hemin and as a negative control,the cells are untreated. After 5 days, cell lysates are prepared andanalyzed for the expression of gamma globin (a fetal marker). A positivein the assay is a gamma globin level at least 2-fold above the negativecontrol.

[4212] The following polypeptides tested positive in this assay:PRO1478, PRO1265, PRO1412, PRO1279, PRO1304, PRO1306, PRO1418, PRO1410and PRO1575.

Example 148 Detection of Polypeptides That Affect Glucose and/or FFAUptake in Skeletal Muscle (Assay 106)

[4213] This assay is designed to determine whether PRO polypeptides showthe ability to affect glucose or FFA uptake by skeletal muscle cells.PRO polypeptides testing positive in this assay would be expected to beuseful for the therapeutic treatment of disorders where either thestimulation or inhibition of glucose uptake by skeletal muscle would bebeneficial including, for example, diabetes or hyper- orhypo-insulinemia.

[4214] In a 96 well format, PRO polypeptides to be assayed are added toprimary rat differentiated skeletal muscle, and allowed to incubateovernight. Then fresh media with the PRO polypeptide and +/− insulin areadded to the wells. The sample media is then monitored to determineglucose and FFA uptake by the skeletal muscle cells. The insulin willstimulate glucose and FFA uptake by the skeletal muscle, and insulin inmedia without the PRO polypeptide is used as a positive control, and alimit for scoring. As the PRO polypeptide being tested may eitherstimulate or inhibit glucose and FFA uptake, results are scored aspositive in the assay if greater than 1.5 times or less than 0.5 timesthe insulin control.

[4215] The following PRO polypeptides tested positive as eitherstimulators or inhibitors of glucose and/or FFA uptake in this assay:PRO1130, PRO1275, PRO1418, PRO1555 and PRO1787.

Example 149 Detection of PRO Polypeptides That Affect Glucose or FFAUptake by Primary Rat Adipocytes (Assay 94)

[4216] This assay is designed to determine whether PRO polypeptides showthe ability to affect glucose or FFA uptake by adipocyte cells. PROpolypeptides testing positive in this assay would be expected to beuseful for the therapeutic treatment of disorders where either thestimulation or inhibition of glucose uptake by adipocytes would bebeneficial including, for example, obesity, diabetes or hyper- orhypo-insulinemia.

[4217] In a 96 well format, PRO polypeptides to be assayed are added toprimary rat adipocytes, and allowed to incubate overnight. Samples aretaken at 4 and 16 hours and assayed for glycerol, glucose and FFAuptake. After the 16 hour incubation, insulin is added to the media andallowed to incubate for 4 hours. At this time, a sample is taken andglycerol, glucose and FFA uptake is measured. Media containing insulinwithout the PRO polypeptide is used as a positive reference control. Asthe PRO polypeptide being tested may either stimulate or inhibit glucoseand FFA uptake, results are scored as positive in the assay if greaterthan 1.5 times or less than 0.5 times the insulin control.

[4218] The following PRO polypeptides tested positive as stimulators ofglucose and/or FFA uptake in this assay: PRO1265, PRO1283, PRO1279,PRO1303, PRO1306, PRO1325, PRO1565 and PRO1567.

[4219] The following PRO polypeptides tested positive as inhibitors ofglucose and/or FFA uptake in this assay: PRO1194, PRO1190, PRO1326,PRO1343, PRO1480, PRO1474, PRO1575 and PRO1760.

Example 150 Chondrocyte Re-differentiation Assay (Assay 110)

[4220] This assay shows that certain polypeptides of the invention actto induce redifferentiation of chondrocytes, therefore, are expected tobe useful for the treatment of various bone and/or cartilage disorderssuch as, for example, sports injuries and arthritis. The assay isperformed as follows. Porcine chondrocytes are isolated by overnightcollagenase digestion of articulary cartilage of metacarpophalangealjoints of 4-6 month old female pigs. The isolated cells are then seededat 25,000 cells/cm² in Ham F-12 containing 10% FBS and 4 μg/mlgentamycin. The culture media is changed every third day and the cellsare then seeded in 96 well plates at 5,000 cells/well in 100 μl of thesame media without serum and 100 μl of the test PRO polypeptide, 5 nMstaurosporin (positive control) or medium alone (negative control) isadded to give a final volume of 200 μl/well. After 5 days of incubationat 37° C., a picture of each well is taken and the differentiation stateof the chondrocytes is determined. A positive result in the assay occurswhen the redifferentiation of the chondrocytes is determined to be moresimilar to the positive control than the negative control.

[4221] The following polypeptide tested positive in this assay: PRO1265,PRO1250, PRO1430, PRO1356, PRO1275, PRO1274, PRO1286, PRO1273, PRO1283,PRO1279, PRO1306, PRO1325, PRO1343, PRO1418, PRO1565, PRO1474, PRO1787,PRO1556 and PRO1801.

Example 151 Induction of Pancreatic O-Cell Precursor Proliferation(Assay 117)

[4222] This assay shows that certain polypeptides of the invention actto induce an increase in the number of pancreatic β-cell precursor cellsand, therefore, are useful for treating various insulin deficient statesin mammals, including diabetes mellitus. The assay is performed asfollows. The assay uses a primary culture of mouse fetal pancreaticcells and the primary readout is an alteration in the expression ofmarkers that represent either β-cell precursors or mature β-cells.Marker expression is measured by real time quantitative PCR (RTQ-PCR);wherein the marker being evaluated is a transcription factor calledPd×1.

[4223] The pancreata are dissected from E14 embryos (CD1 mice). Thepancreata are then digested with collagenase/dispase in F12/DMEM at 37°C. for 40 to 60 minutes (collagenase/dispase, 1.37 mg/ml, BoehringerMannheim, #1097113). The digestion is then neutralized with an equalvolume of 5% BSA and the cells are washed once with RPMI1640. At day 1,the cells are seeded into 12-well tissue culture plates (pre-coated withlaminin, 20 μg/ml in PBS, Boehringer Mannheim, #124317). Cells frompancreata from 1-2 embryos are distributed per well. The culture mediumfor this primary cuture is 14F/1640. At day 2, the media is removed andthe attached cells washed with RPMI/1640. Two mls of minimal media areadded in addition to the protein to be tested. At day 4, the media isremoved and RNA prepared from the cells and marker expression analyzedby real time quantitative RT-PCR. A protein is considered to be activein the assay if it increases the expression of the relevant β-cellmarker as compared to untreated controls.

[4224] 14F/1640 is RPMI1640 (Gibco) plus the following:

[4225] group A 1:1000

[4226] group B 1:1000

[4227] recombinant human insulin 10 μg/ml

[4228] Aprotinin (50 μg/ml) 1:2000 (Boehringer manheim #981532)

[4229] Bovine pituitary extract (BPE) 60 μg/ml

[4230] Gentamycin 100 ng/ml

[4231] Group A: (in 10 ml PBS)

[4232] Transferrin, 100 mg (Sigma T2252)

[4233] Epidermal Growth Factor, 100μg (BRL 100004)

[4234] Triiodothyronine, 10 μl of 5×10⁻⁶ M (Sigma T5516)

[4235] Ethanolamine, 100 μl of 10⁻¹ M (Sigma E0135)

[4236] Phosphoethalamine, 100 μl of 10⁻¹ M (Sigma P0503)

[4237] Selenium, 4 μl of 10⁻¹ M (Aesar #12574)

[4238] Group C: (in 10 ml 100% ethanol)

[4239] Hydrocortisone, 2 μl of 5×10⁻³ M (Sigma #H0135)

[4240] Progesterone, 100 μl of 1×10⁻³ M (Sigma #P6149)

[4241] Forskolin, 500 μl of 20 mM (Calbiochem #344270)

[4242] Minimal media:

[4243] RPMI 1640 plus transferrin (10 μg/ml), insulin (1 μg/ml),gentamycin (100 ng/ml), aprotinin (50 μg/ml) and BPE (15 μg/ml).

[4244] Defined media:

[4245] RPMI 1640 plus transferrin (10 μg/ml), insulin (1 μg/ml),gentamycin (100 ng/ml) and aprotinin (50 μg/ml).

[4246] The following polypeptides tested positive in this assay: PRO1382and PRO1561.

Example 152 Proliferation of Rat Utricular Supporting Cells (Assay 54)

[4247] This assay shows that certain polypeptides of the invention actas potent mitogens for inner ear supporting cells which are auditoryhair cell progenitors and, therefore, are useful for inducing theregeneration of auditory hair cells and treating hearing loss inmammals. The assay is performed as follows. Rat UEC-4 utricularepithelial cells are aliquoted into 96 well plates with a density of3000 cells/well in 200 4u of serum-containing medium at 33° C. The cellsare cultured overnight and are then switched to serum-free medium at 37°C. Various dilutions of PRO polypeptides (or nothing for a control) arethen added to the cultures and the cells are incubated for 24 hours.After the 24 hour incubation, ³H-thymidine (1 μCi/well) is added and thecells are then cultured for an additional 24 hours. The cultures arethen washed to remove unincorporated radiolabel, the cells harvested andCpm per well determined. Cpm of at least 30% or greater in the PROpolypeptide treated cultures as compared to the control cultures isconsidered a positive in the assay.

[4248] The following polypeptides tested positive in this assay:PRO1340.

Example 153 Chondrocyte Proliferation Assay (Assay 111)

[4249] This assay is designed to determine whether PRO polypeptides ofthe present invention show the ability to induce the proliferationand/or redifferentiation of chondrocytes in culture. PRO polypeptidestesting positive in this assay would be expected to be useful for thetherapeutic treatment of various bone and/or cartilage disorders suchas, for example, sports injuries and arthritis.

[4250] Porcine chondrocytes are isolated by overnight collagenasedigestion of articular cartilage of the metacarpophalangeal joint of 4-6month old female pigs. The isolated cells are then seeded at 25,000cells/cm² in Ham F-12 containing 10% FBS and 4 μg/ml gentamycin. Theculture media is changed every third day and the cells are reseeded to25,000 cells/cm² every five days. On day 12, the cells are seeded in 96well plates at 5,000 cells/well in 100 μl of the same media withoutserum and 100 pI of either serum-free medium (negative control),staurosporin (final concentration of 5 nM; positive control) or the testPRO polypeptide are added to give a final volume of 200 μl/well. After 5days at 37° C., 20 μl of Alamar blue is added to each well and theplates are incubated for an additional 3 hours at 37° C. Thefluorescence is then measured in each well (Ex:530 nm; Em: 590 nm). Thefluorescence of a plate containing 200 μl of the serum-free medium ismeasured to obtain the background. A positive result in the assay isobtained when the fluorescence of the PRO polypeptide treated sample ismore like that of the positive control than the negative control.

[4251] The following PRO polypeptides tested positive in this assay:PRO1265, PRO1412, PRO1347, PRO1279, PRO1410 and PRO1474.

Example 154 Inhibition of Heart Neonatal Hypertrophy Induced by LIF+ET-1(Assay 74)

[4252] This assay is designed to determine whether PRO polypeptides ofthe present invention show the ability to inhibit neonatal hearthypertrophy induced by LIF and endothelin-1 (ET-1). A test compound thatprovides a positive response in the present assay would be useful forthe therapeutic treatment of cardiac insufficiency diseases or disorderscharacterized or associated with an undesired hypertrophy of the cardiacmuscle.

[4253] Cardiac myocytes from 1-day old Harlan Sprague Dawley rats (180μl at 7.5×10⁴/ml, serum <0.1, freshly isolated) are introduced on day 1to 96-well plates previously coated with DMEM/F12+4% FCS. Test PROpolypeptide samples or growth medium alone (negative control) are thenadded directly to the wells on day 2 in 20 μl volume. LIF+ET-1 are thenadded to the wells on day 3. The cells are stained after an additional 2days in culture and are then scored visually the next day. A positive inthe assay occurs when the PRO polypeptide treated myocytes are visuallysmaller on the average or less numerous than the untreated myocytes.

[4254] The following PRO polypeptides tested positive in this assay:PRO1760.

Example 155 Tissue Expression Distribution

[4255] Oligonucleotide probes were constructed from some of the PROpolypeptide-encoding nucleotide sequences shown in the accompanyingfigures for use in quantitative PCR amplification reactions. Theoligonucleotide probes were chosen so as to give an approximately200-600 base pair amplified fragment from the 3′ end of its associatedtemplate in a standard PCR reaction. The oligonucleotide probes wereemployed in standard quantitative PCR amplification reactions with cDNAlibraries isolated from different human adult and/or fetal tissuesources and analyzed by agarose gel electrophoresis so as to obtain aquantitative determination of the level of expression of the PROpolypeptide-encoding nucleic acid in the various tissues tested.Knowledge of the expression pattern or the differential expression ofthe PRO polypeptide-encoding nucleic acid in various different humantissue types provides a diagnostic marker useful for tissue typing, withor without other tissue-specific markers, for determining the primarytissue source of a metastatic tumor, and the like. These assays providedthe following results. DNA Molecule Tissues With Significant ExpressionTissues Lacking Significant Expression DNA19902-1669 HUVEC cells, colontumor dendritic cells, lymphoblast cells, heart DNA23322-1393 uterus,colon tumor, prostate cartilage DNA26846-1397 lymphoblast cells uterus,heart, cartilage DNA56107-1415 spleen, substantia nigra, colon tumorcartilage DNA56406-1704 THP-1 macrophages, uterus, spleen endothelialcells, prostate, cartilage DNA56529-1647 liver, kidney, brainadenocarcionoma, lung, bone marrow DNA56862-1343 endothelial cells,substantia nigra colon tumor, lymphoblast cells, uterus hippocampusDNA57254-1477 kidney lung, placenta, brain DNA58730-1607 bone marrow,kidney lung, brain DNA58732-1650 lung, bone marrow brain, liverDNA58828-1519 adenocarcinoma lung, retina, small intestine DNA58852-1637uterus colon tumor, heart, brain DNA59212-1627 uterus prostate,cartilage, heart DNA59219-1613 spleen, dendrocytes, prostate, uterussubstantia nigra, colon tumor, heart DNA59817-1703 bone marrow lung,small intestine, placenta DNA60278-1530 prostate, colon tumor uterus,cartilage DNA60608-1577 kidney, bone marrow breast carcinoma, smallintestine, lung DNA60611-1524 breast carcinoma lung, small intestine,retina DNA60740-1615 breast carcinoma, adenocarcinoma lung, smallintestine, brain DNA62809-1531 THP-1 macrophages uterus, spleen, brain,colon tumor DNA62815-1576 colon tumor, uterus, prostate spleen, brain,heart, cartilage DNA62845-1684 liver, bone marrow adenocarcinoma, lung,brain DNA64849-1604 kidney lung, pancreas, liver, thyroid DNA64863-1573lung, brain, kidney, bone marrow liver, pancreas DNA64881-1602 uterusheart, spleen, brain, endothelial cells DNA64902-1667 urerus prostate,brain, heart, spleen DNA64952-1568 lung, brain pancreas DNA65403-1565spleen, dendrocytes, THP-1 macrophages endothelial cells, colon tumor,lymphoblasts DNA65408-1578 prostate, spleen, dendrocytes uterus, heart,substantia nigra DNA65423-1595 testis breast carcinoma, retina, smallintestine DNA66512-1564 heart, uterus, prostate, cartilage endothelialcells DNA66519-1535 dendrocytes, lymphoblasts, uterus substantia nigra,prostate, spleen DNA66521-1583 uterus, heart, hippocampus cartilage,dendrocytes, spleen DNA66658-1584 prostate, uterus, hippocampus, spleencolon tumor, cartilage, heart DNA66672-1586 spleen heart, prostate,brain, uterus DNA66674-1599 uterus, prostate heart, brain, spleen,cartilage, colon tumor DNA68836-1656 kidney lung, brain, bone marrow,liver DNA68871-1638 uterus, colon tumor, prostate heart, cartilage,brain, spleen DNA68880-1676 heart, endothelial cells, brain, uterusTHP-1 macrophages DNA68885-1678 uterus, colon tumor, prostate brain,heart, cartilage, endothelial cells DNA71180-1655 brain lung, bonemarrow, liver, kidney DNA71184-1634 breast carcinoma, bone marrow,testis brain, adrenal gland DNA71234-1651 kidney, bone marrow lung,brain, placenta DNA71277-1636 prostate, cartilage, heart, uterus colontumor, substantia nigra, endothelial cells DNA71286-1687 uterus,prostate, brain, cartilage heart DNA71883-1660 aortic endothelial cellslung, retina, small intestine, kidney DNA73492-1671 breast carcinoma,aortic endothelial cells lung, brain, testis bone marrow DNA73734-1680prostate, spleen heart, cartilage, brain, uterus DNA73735-1681 prostatebrain, heart, cartilage, spleen DNA73736-1657 spleen, substantia nigra,hippocampus, prostate, heart, uterus, dendrocytes cartilageDNA73737-1658 uterus prostate, heart, spleen, cartilage DNA73742-1662spleen, uterus, prostate dendrocytes, colon tumor, endothelial cellsDNA73746-1654 prostate uterus, heart, brain, cartilage, spleenDNA73760-1672 breast carcinoma retina, brain, kidney, liver, testisDNA76393-1664 endothelial cells, cartilage, uterus brain, prostateDNA76398-1699 hippocampus, prostate, THP-1 heart, uterus, spleen,dendrocytes macrtophages DNA76399-1700 IM-9 lymphoblasts prostate,spleen, heart, cartilage, uterus DNA76522-2500 colon tumor uterus,prostate, brain, heart, cartilage DNA77301-1708 brain lung, smallintestine, kidney, liver DNA77648-1688 retina, breast carcinoma, kidney,liver, brain, lung bone marrow DNA77568-1626 brain lung, liver,placenta, heart DNA58727-1474 HUVEC, dendrocytes, uterus substantianigra, hippocampus, prostate, colon tumor DNA61185-1646 colon tumor,HUVEC uterus, dendrocytes, substantia nigra DNA61608-1606 colon tumor,dendrocytes, spleen, testis substantia nigra, placenta DNA66304-1546prostate, testis uterus, brain, heart, colon tumor, adrenal glandDNA71213-1659 brain, spleen, HUVEC, colon tumor prostate, uterus, heart,cartilage DNA62812-1594 heart placenta, testis, uterus, adrenal gland,bone marrow, prostate DNA66660-1585 colon tumor, HUVEC, testis,placenta, bone marrow uterus DNA66669-1597 heart, placenta, adrenalgland, uterus cartilage, testis, colon tumor, HUVEC, bone marrow,prostate, spleen DNA68866-1644 testis, colon tumor, prostate, spleen,cartilage, adrenal gland, HUVEC, placenta DNA73730-1679 testis, adrenalgland, uterus, prostate, cartilage, colon tumor, heart, placenta, uterusspleen

Deposit of Material

[4256] The following materials have been deposited with the AmericanType Culture Collection, 10801 University Blvd., Manassas, Va.20110-2209, USA (ATCC): TABLE 12 Material ATCC Dep. No. Deposit DateDNA19902-1669 203454 Nov. 3, 1998 DNA26846-1397 203406 Oct. 27, 1998DNA56107-1415 203405 Oct. 27, 1998 DNA56406-1704 203478 Nov. 17, 1998DNA56529-1647 203293 Sept. 29, 1998 DNA56531-1648 203286 Sept. 29, 1998DNA56862-1343 203174 Sept. 1, 1998 DNA57254-1477 203289 Sept. 29, 1998DNA57841-1522 203458 Nov. 3, 1998 DNA58727-1474 203171 Sept. 1, 1998DNA58730-1607 203221 Sept. 15, 1998 DNA58732-1650 203290 Sept. 29, 1998DNA58828-1519 203172 Sept. 1, 1998 DNA58852-1637 203271 Sept. 22, 1998DNA59212-1627 203245 Sept. 9, 1998 DNA59218-1559 203287 Sept. 29, 1998DNA59219-1613 203220 Sept. 15, 1998 DNA59586-1520 203288 Sept. 29, 1998DNA59817-1703 203470 Nov. 17, 1998 DNA60278-1530 203170 Sept. 1, 1998DNA60608-1577 203126 Aug. 18, 1998 DNA60611-1524 203175 Sept. 1, 1998DNA60618-1557 203292 Sept. 29, 1998 DNA60740-1615 203456 Nov. 3, 1998DNA60764-1533 203452 Nov. 10, 1998 DNA60775-1532 203173 Sept. 1, 1998DNA61185-1646 203464 Nov. 17, 1998 DNA61608-1606 203239 Sept. 9, 1998DNA62808-1326 203358 Oct. 20, 1998 DNA62809-1531 203237 Sept. 9, 1998DNA62815-1578 203247 Sept. 9, 1998 DNA62845-1684 203361 Oct. 20, 1998DNA64842-1632 203278 Sept. 22, 1998 DNA64849-1604 203468 Nov. 17, 1998DNA64863-1573 203251 Sept. 9, 1998 DNA64881-1602 203240 Sept. 9, 1998DNA64883-1526 203253 Sept. 9, 1998 DNA64885-1529 203457 Nov. 3, 1998DNA64886-1601 203241 Sept. 9, 1998 DNA64888-1542 203249 Sept. 9, 1998DNA64889-1541 203250 Sept. 9, 1998 DNA64897-1628 203216 Sept. 15, 1998DNA64902-1667 203317 Oct. 6, 1998 DNA64903-1553 203223 Sept. 15, 1998DNA64905-1558 203233 Sept. 15, 1998 DNA64950-1590 203224 Sept. 15, 1998DNA64952-1568 203222 Sept. 15, 1998 DNA65402-1540 203252 Sept. 9, 1998DNA65403-1565 203230 Sept. 15, 1998 DNA65404-1551 203244 Sept. 9, 1998DNA65405-1547 203476 Nov. 17, 1998 DNA65406-1567 203219 Sept. 15, 1998DNA65408-1578 203217 Sept. 15, 1998 DNA65409-1566 203232 Sept. 15, 1998DNA65410-1569 203231 Sept. 15, 1998 DNA65423-1595 203227 Sept. 15, 1998DNA66304-1546 203321 Oct. 6, 1998 DNA66511-1411 203228 Sept. 15, 1998DNA66512-1564 203218 Sept. 15, 1998 DNA66519-1535 203236 Sept. 15, 1998DNA66520-1536 203226 Sept. 15, 1998 DNA66521-1583 203225 Sept. 15, 1998DNA66526-1616 203246 Sept. 9, 1998 DNA66658-1584 203229 Sept. 15, 1998DNA66659-1593 203269 Sept. 22, 1998 DNA66663-1598 203268 Sept. 22, 1998DNA66669-1597 203272 Sept. 22, 1998 DNA66672-1586 203265 Sept. 22, 1998DNA66674-1599 203281 Sept. 22, 1998 DNA66675-1587 203282 Sept. 22, 1998DNA67962-1649 203291 Sept. 29, 1998 DNA68836-1656 203455 Nov. 3, 1998DNA68864-1629 203276 Sept. 22, 1998 DNA68866-1644 203283 Sept. 22, 1998DNA68871-1638 203280 Sept. 22, 1998 DNA68874-1622 203277 Sept. 22, 1998DNA68880-1676 203319 Oct. 6, 1998 DNA68885-1570 203311 Oct. 6, 1998DNA71166-1685 203355 Oct. 20, 1998 DNA71169-1709 203467 Nov. 17, 1998DNA71180-1655 203403 Oct. 27, 1998 DNA71184-1634 203266 Sept. 22, 1998DNA71213-1659 203401 Oct. 27, 1998 DNA71234-1651 203402 Oct. 27, 1998DNA71277-1636 203285 Sept. 22, 1998 DNA71282-1668 203312 Oct. 6, 1998DNA71286-1604 203357 Oct. 20, 1998 DNA71883-1660 203475 Nov. 17, 1998DNA73401-1633 203273 Sept. 22, 1998 DNA73492-1671 203324 Oct. 6, 1998DNA73727-1673 203459 Nov. 3, 1998 DNA73730-1679 203320 Oct. 6, 1998DNA73734-1680 203363 Oct. 20, 1998 DNA73735-1681 203356 Oct. 20, 1998DNA73736-1657 203466 Nov. 17, 1998 DNA73737-1658 203412 Oct. 27, 1998DNA73739-1645 203270 Sept. 22, 1998 DNA73742-1662 203316 Oct. 6, 1998DNA73744-1665 203322 Oct. 6, 1998 DNA73746-1654 203411 Oct. 27, 1998DNA73760-1672 203314 Oct. 6, 1998 DNA76396-1698 203471 Nov. 17, 1998DNA76398-1699 203474 Nov. 17, 1998 DNA76399-1700 203472 Nov. 17, 1998DNA76401-1683 203360 Oct. 20, 1998 DNA76510-2504 203477 Nov. 17, 1998DNA76522-2500 203469 Nov. 17, 1998 DNA76529-1666 203315 Oct. 6, 1998DNA76531-1701 203465 Nov. 17, 1998 DNA76532-1702 203473 Nov. 17, 1998DNA76538-1670 203313 Oct. 6, 1998 DNA76541-1675 203409 Oct. 27, 1998DNA77301-1708 203407 Oct. 27, 1998 DNA77303-2502 203479 Nov. 17, 1998DNA77648-1688 203408 Oct. 27, 1998 DNA77652-2505 203480 Nov. 17, 1998DNA83500-2506 203391 Oct. 29, 1998 DNA77568-1626 203134 Aug. 18, 1998DNA23322-1393 203400 Oct. 27, 1998 DNA59814-1486 203359 Oct. 20, 1998DNA62812-1594 203248 Sept. 9, 1998 DNA66660-1585 203279 Sept. 22, 1998DNA76393-1664 203323 Oct. 6, 1998

[4257] These deposit were made under the provisions of the BudapestTreaty on the International Recognition of the Deposit of Microorganismsfor the Purpose of Patent Procedure and the Regulations thereunder(Budapest Treaty). This assures maintenance of a viable culture of thedeposit for 30 years from the date of deposit. The deposits will be madeavailable by ATCC under the terms of the Budapest Treaty, and subject toan agreement between Genentech, Inc. and ATCC, which assures permanentand unrestricted availability of the progeny of the culture of thedeposit to the public upon issuance of the pertinent U.S. patent or uponlaying open to the public of any U.S. or foreign patent application,whichever comes first, and assures availability of the progeny to onedetermined by the U.S. Commissioner of Patents and Trademarks to beentitled thereto according to 35 USC §122 and the Commnissioner's rulespursuant thereto (including 37 CFR §1.14 with particular reference to886 OG 638).

[4258] The assignee of the present application has agreed that if aculture of the materials on deposit should die or be lost or destroyedwhen cultivated under suitable conditions, the materials will bepromptly replaced on notification with another of the same. Availabilityof the deposited material is not to be construed as a license topractice the invention in contravention of the rights granted under theauthority of any government in accordance with its patent laws.

[4259] The foregoing written specification is considered to besufficient to enable one skilled in the art to practice the invention.The present invention is not to be limited in scope by the constructdeposited, since the deposited embodiment is intended as a singleillustration of certain aspects of the invention and any constructs thatare functionally equivalent are within the scope of this invention. Thedeposit of material herein does not constitute an admission that thewritten description herein contained is inadequate to enable thepractice of any aspect of the invention, including the best modethereof, nor is it to be construed as limiting the scope of the claimsto the specific illustrations that it represents. Indeed, variousmodifications of the invention in addition to those shown and describedherein will become apparent to those skilled in the art from theforegoing description and fall within the scope of the appended claims.

0 SEQUENCE LISTING The patent application contains a lengthy “SequenceListing” section. A copy of the “Sequence Listing” is available inelectronic form from the USPTO web site(http://seqdata.uspto.gov/sequence.html?DocID=20030073130). Anelectronic copy of the “Sequence Listing” will also be available fromthe USPTO upon request and payment of the fee set forth in 37 CFR1.19(b)(3).

What is claimed is:
 1. An isolated nucleic acid having at least 80%nucleic acid sequence identity to a nucleotide sequence that encodes anamino acid sequence selected from the group consisting of the amino acidsequence shown in FIG. 2 (SEQ ID NO: 4), FIG. 4 (SEQ ID NO: 6), FIG. 6(SEQ ID NO: 8), FIG. 8 (SEQ ID NO: 10), FIG. 10 (SEQ ID NO: 12), FIG. 12(SEQ ID NO: 17), FIG. 14 (SEQ ID NO: 22), FIG. 16 (SEQ ID NO: 24), FIG.18 (SEQ ID NO: 29), FIG. 20 (SEQ ID NO: 31), FIG. 22 (SEQ ID NO: 33),FIG. 24 (SEQ ID NO: 41), FIG. 26 (SEQ ID NO: 43), FIG. 28 (SEQ ID NO:50), FIG. 30 (SEQ ID NO: 52), FIG. 32 (SEQ ID NO: 54), FIG. 34 (SEQ IDNO: 56), FIG. 36 (SEQ ID NO: 58), FIG. 38 (SEQ ID NO: 63), FIG. 40 (SEQID NO: 68), FIG. 42 (SEQ ID NO: 70), FIG. 44 (SEQ ID NO: 72), FIG. 46(SEQ ID NO: 77), FIG. 48 (SEQ ID NO: 79), FIG. 50 (SEQ ID NO: 84), FIG.52 (SEQ ID NO: 86), FIG. 54 (SEQ ID NO: 88), FIG. 56 (SEQ ID NO: 95),FIG. 58 (SEQ ID NO: 100), FIG. 60 (SEQ ID NO: 102), FIG. 62 (SEQ ID NO:104), FIG. 64 (SEQ ID NO: 111), FIG. 66 (SEQ ID NO: 116), FIG. 68 (SEQID NO: 118), FIG. 70 (SEQ ID NO: 123), FIG. 72 (SEQ ID NO: 128), FIG. 74(SEQ ID NO: 130), FIG. 76 (SEQ ID NO: 132), FIG. 78 (SEQ ID NO: 134),FIG. 80 (SEQ ID NO: 136), FIG. 82 (SEQ ID NO: 138), FIG. 84 (SEQ ID NO:140), FIG. 86 (SEQ ID NO: 142), FIG. 88 (SEQ ID NO: 144), FIG. 90 (SEQID NO: 146), FIG. 92 (SEQ ID NO: 148), FIG. 94 (SEQ ID NO: 153), FIG. 96(SEQ ID NO: 158), FIG. 98 (SEQ ID NO: 160), FIG. 100 (SEQ ID NO: 162),FIG. 102 (SEQ ID NO: 170), FIG. 104 (SEQ ID NO: 180), FIG. 106 (SEQ IDNO: 189), FIG. 108 (SEQ ID NO: 194), FIG. 110 (SEQ ID NO: 196), FIG. 112(SEQ ID NO: 198), FIG. 114 (SEQ ID NO: 203), FIG. 116 (SEQ ID NO: 210),FIG. 118 (SEQ ID NO: 212), FIG. 120 (SEQ ID NO: 214), FIG. 122 (SEQ IDNO: 216), FIG. 124 (SEQ ID NO: 218), FIG. 126 (SEQ ID NO: 220), FIG. 128(SEQ ID NO: 225), FIG. 130 (SEQ ID NO: 227), FIG. 132 (SEQ ID NO: 229),FIG. 134 (SEQ ID NO: 234), FIG. 136 (SEQ ID NO: 236), FIG. 138 (SEQ IDNO: 243), FIG. 140 (SEQ ID NO: 248), FIG. 142 (SEQ ID NO: 253), FIG. 144(SEQ ID NO: 260), FIG. 146 (SEQ ID NO: 265), FIG. 148 (SEQ ID NO: 267),FIG. 150 (SEQ ID NO: 269), FIG. 152 (SEQ ID NO: 271), FIG. 154 (SEQ IDNO: 273), FIG. 156 (SEQ ID NO: 275), FIG. 158 (SEQ ID NO: 277), FIG. 160(SEQ ID NO: 282), FIG. 162 (SEQ ID NO: 287), FIG. 164 (SEQ ID NO: 292),FIG. 166 (SEQ ID NO: 297), FIG. 168 (SEQ ID NO: 302), FIG. 170 (SEQ IDNO: 304), FIG. 172 (SEQ ID NO: 306), FIG. 174 (SEQ ID NO: 308), FIG. 176(SEQ ID NO: 310), FIG. 178 (SEQ ID NO: 315), FIG. 180 (SEQ ID NO: 317),FIG. 182 (SEQ ID NO: 322), FIG. 184 (SEQ ID NO: 324), FIG. 186 (SEQ IDNO: 326), FIG. 188 (SEQ ID NO: 328), FIG. 190 (SEQ ID NO: 330), FIG. 192(SEQ ID NO: 332), FIG. 194 (SEQ ID NO: 334), FIG. 196 (SEQ ID NO: 336),FIG. 198 (SEQ ID NO: 338), FIG. 200 (SEQ ID NO: 340), FIG. 202 (SEQ IDNO: 347), FIG. 204 (SEQ ID NO: 352), FIG. 206 (SEQ ID NO: 354), FIG. 208(SEQ ID NO: 356), FIG. 210 (SEQ ID NO: 358), FIG. 212 (SEQ ID NO: 364),FIG. 214 (SEQ ID NO: 366), FIG. 216 (SEQ ID NO: 372), FIG. 218 (SEQ IDNO: 374), FIG. 220 (SEQ ID NO: 376), FIG. 222 (SEQ ID NO: 378), FIG. 224(SEQ ID NO: 383), FIG. 226 (SEQ ID NO: 385), FIG. 228 (SEQ ID NO: 390),FIG. 230 (SEQ ID NO: 395), FIG. 232 (SEQ ID NO: 397), FIG. 234 (SEQ IDNO: 402), FIG. 236 (SEQ ID NO: 406), FIG. 238 (SEQ ID NO: 410), FIG. 240(SEQ ID NO: 415), FIG. 242 (SEQ ID NO: 423), FIG. 244 (SEQ ID NO: 429)and FIG. 246 (SEQ ID NO: 431).
 2. The nucleic acid of claim 1, whereinsaid nucleotide sequence comprises a nucleotide sequence selected fromthe group consisting of the sequence shown in FIG. 1 (SEQ ID NO: 3),FIG. 3 (SEQ ID NO: 5), FIG. 5 (SEQ ID NO: 7), FIG. 7 (SEQ ID NO: 9),FIG. 9 (SEQ ID NO: 11), FIG. 11 (SEQ ID NO: 16), FIG. 13 (SEQ ID NO:21), FIG. 15 (SEQ ID NO: 23), FIG. 17 (SEQ ID NO: 28), FIG. 19 (SEQ IDNO: 30), FIG. 21 (SEQ ID NO: 32), FIG. 23 (SEQ ID NO: 40), FIG. 25 (SEQID NO: 42), FIG. 27 (SEQ ID NO: 49), FIG. 29 (SEQ ID NO: 51), FIG. 31(SEQ ID NO: 53), FIG. 33 (SEQ ID NO: 55), FIG. 35 (SEQ ID NO: 57), FIG.37 (SEQ ID NO: 62), FIG. 39 (SEQ ID NO: 67), FIG. 41 (SEQ ID NO: 69),FIG. 43 (SEQ ID NO: 71), FIG. 45 (SEQ ID NO: 76), FIG. 47 (SEQ ID NO:78), FIG. 49 (SEQ ID NO: 83), FIG. 51 (SEQ ID NO: 85), FIG. 53 (SEQ IDNO: 87), FIG. 55 (SEQ ID NO: 94), FIG. 57 (SEQ ID NO: 99), FIG. 59 (SEQID NO: 101), FIG. 61 (SEQ ID NO: 103), FIG. 63 (SEQ ID NO: 110), FIG. 65(SEQ ID NO: 115), FIG. 67 (SEQ ID NO: 117), FIG. 69 (SEQ ID NO: 122),FIG. 71 (SEQ ID NO: 127), FIG. 73 (SEQ ID NO: 129), FIG. 75 (SEQ ID NO:131), FIG. 77 (SEQ ID NO: 133), FIG. 79 (SEQ ID NO: 135), FIG. 81 (SEQID NO: 137), FIG. 83 (SEQ ID NO: 139), FIG. 85 (SEQ ID NO: 141), FIG. 87(SEQ ID NO: 143), FIG. 89 (SEQ ID NO: 145), FIG. 91 (SEQ ID NO: 147),FIG. 93 (SEQ ID NO: 152), FIG. 95 (SEQ ID NO: 157), FIG. 97 (SEQ ID NO:159), FIG. 99 (SEQ ID NO: 161), FIG. 101 (SEQ ID NO: 169), FIG. 103 (SEQID NO: 179), FIG. 105 (SEQ ID NO: 188), FIG. 107 (SEQ ID NO: 193), FIG.109 (SEQ ID NO: 195), FIG. 111 (SEQ ID NO: 197), FIG. 113 (SEQ ID NO:202), FIG. 115 (SEQ ID NO: 209), FIG. 117 (SEQ ID NO: 211), FIG. 119(SEQ ID NO: 213), FIG. 121 (SEQ ID NO: 215), FIG. 123 (SEQ ID NO: 217),FIG. 125 (SEQ ID NO: 219), FIG. 127 (SEQ ID NO: 224), FIG. 129 (SEQ IDNO: 226), FIG. 131 (SEQ ID NO: 228), FIG. 133 (SEQ ID NO: 233), FIG. 135(SEQ ID NO: 235), FIG. 137 (SEQ ID NO: 242), FIG. 139 (SEQ ID NO: 247),FIG. 141 (SEQ ID NO: 252), FIG. 143 (SEQ ID NO: 259), FIG. 145 (SEQ IDNO: 264), FIG. 147 (SEQ ID NO: 266), FIG. 149 (SEQ ID NO: 268), FIG. 151(SEQ ID NO: 270), FIG. 153 (SEQ ID NO: 272), FIG. 155 (SEQ ID NO: 274),FIG. 157 (SEQ ID NO: 276), FIG. 159 (SEQ ID NO: 281), FIG. 161 (SEQ IDNO: 286), FIG. 163 (SEQ ID NO: 291), FIG. 165 (SEQ ID NO: 296), FIG. 167(SEQ ID NO: 301), FIG. 169 (SEQ ID NO: 303), FIG. 171 (SEQ ID NO: 305),FIG. 173 (SEQ ID NO: 307), FIG. 175 (SEQ ID NO: 309), FIG. 177 (SEQ IDNO: 314), FIG. 179 (SEQ ID NO: 316), FIG. 181 (SEQ ID NO: 321), FIG. 183(SEQ ID NO: 323), FIG. 185 (SEQ ID NO: 325), FIG. 187 (SEQ ID NO: 327),FIG. 189 (SEQ ID NO: 329), FIG. 191 (SEQ ID NO: 331), FIG. 193 (SEQ IDNO: 333), FIG. 195 (SEQ ID NO: 335), FIG. 197 (SEQ ID NO: 337), FIG. 199(SEQ ID NO: 339), FIG. 201 (SEQ ID NO: 346), FIG. 203 (SEQ ID NO: 351),FIG. 205 (SEQ ID NO: 353), FIG. 207 (SEQ ID NO: 355), FIG. 209 (SEQ IDNO: 357), FIG. 211 (SEQ ID NO: 363), FIG. 213 (SEQ ID NO: 365), FIG. 215(SEQ ID NO: 371), FIG. 217 (SEQ ID NO: 373), FIG. 219 (SEQ ID NO: 375),FIG. 221 (SEQ ID NO: 377), FIG. 223 (SEQ ID NO: 382), FIG. 225 (SEQ IDNO: 384), FIG. 227 (SEQ ID NO: 389), FIG. 229 (SEQ ID NO: 394), FIG. 231(SEQ ID NO: 396), FIG. 233 (SEQ ID NO: 401), FIG. 235 (SEQ ID NO: 405),FIG. 237 (SEQ ID NO: 409), FIG. 239 (SEQ ID NO: 414), FIG. 241 (SEQ IDNO: 422), FIG. 242 (SEQ ID NO: 428) and FIG. 245 (SEQ ID NO: 430). 3.The nucleic acid of claim 1, wherein said nucleotide sequence comprisesa nucleotide sequence selected from the group consisting of thefull-length coding sequence of the sequence shown in FIG. 1 (SEQ ID NO:3), FIG. 3 (SEQ ID NO: 5), FIG. 5 (SEQ ID NO: 7), FIG. 7 (SEQ ID NO: 9),FIG. 9 (SEQ ID NO: 11), FIG. 11 (SEQ ID NO: 16), FIG. 13 (SEQ ID NO:21), FIG. 15 (SEQ ID NO: 23), FIG. 17 (SEQ ID NO: 28), FIG. 19 (SEQ IDNO: 30), FIG. 21 (SEQ ID NO: 32), FIG. 23 (SEQ ID NO: 40), FIG. 25 (SEQID NO: 42), FIG. 27 (SEQ ID NO: 49), FIG. 29 (SEQ ID NO: 51), FIG. 31(SEQ ID NO: 53), FIG. 33 (SEQ ID NO: 55), FIG. 35 (SEQ ID NO: 57), FIG.37 (SEQ ID NO: 62), FIG. 39 (SEQ ID NO: 67), FIG. 41 (SEQ ID NO: 69),FIG. 43 (SEQ ID NO: 71), FIG. 45 (SEQ ID NO: 76), FIG. 47 (SEQ ID NO:78), FIG. 49 (SEQ ID NO: 83), FIG. 51 (SEQ ID NO: 85), FIG. 53 (SEQ IDNO: 87), FIG. 55 (SEQ ID NO: 94), FIG. 57 (SEQ ID NO: 99), FIG. 59 (SEQID NO: 101), FIG. 61 (SEQ ID NO: 103), FIG. 63 (SEQ ID NO: 110), FIG. 65(SEQ ID NO: 115), FIG. 67 (SEQ ID NO: 117), FIG. 69 (SEQ ID NO: 122),FIG. 71 (SEQ ID NO: 127), FIG. 73 (SEQ ID NO: 129), FIG. 75 (SEQ ID NO:131), FIG. 77 (SEQ ID NO: 133), FIG. 79 (SEQ ID NO: 135), FIG. 81 (SEQID NO: 137), FIG. 83 (SEQ ID NO: 139), FIG. 85 (SEQ ID NO: 141), FIG. 87(SEQ ID NO: 143), FIG. 89 (SEQ ID NO: 145), FIG. 91 (SEQ ID NO: 147),FIG. 93 (SEQ ID NO: 152), FIG. 95 (SEQ ID NO: 157), FIG. 97 (SEQ ID NO:159), FIG. 99 (SEQ ID NO: 161), FIG. 101 (SEQ ID NO: 169), FIG. 103 (SEQID NO: 179), FIG. 105 (SEQ ID NO: 188), FIG. 107 (SEQ ID NO: 193), FIG.109 (SEQ ID NO: 195), FIG. 111 (SEQ ID NO: 197), FIG. 113 (SEQ ID NO:202), FIG. 115 (SEQ ID NO: 209), FIG. 117 (SEQ ID NO: 211), FIG. 119(SEQ ID NO: 213), FIG. 121 (SEQ ID NO: 215), FIG. 123 (SEQ ID NO: 217),FIG. 125 (SEQ ID NO: 219), FIG. 127 (SEQ ID NO: 224), FIG. 129 (SEQ IDNO: 226), FIG. 131 (SEQ ID NO: 228), FIG. 133 (SEQ ID NO: 233), FIG. 135(SEQ ID NO: 235), FIG. 137 (SEQ ID NO: 242), FIG. 139 (SEQ ID NO: 247),FIG. 141 (SEQ ID NO: 252), FIG. 143 (SEQ ID NO: 259), FIG. 145 (SEQ IDNO: 264), FIG. 147 (SEQ ID NO: 266), FIG. 149 (SEQ ID NO: 268), FIG. 151(SEQ ID NO: 270), FIG. 153 (SEQ ID NO: 272), FIG. 155 (SEQ ID NO: 274),FIG. 157 (SEQ ID NO: 276), FIG. 159 (SEQ ID NO: 281), FIG. 161 (SEQ IDNO: 286), FIG. 163 (SEQ ID NO: 291), FIG. 165 (SEQ ID NO: 296), FIG. 167(SEQ ID NO: 301), FIG. 169 (SEQ ID NO: 303), FIG. 171 (SEQ ID NO: 305),FIG. 173 (SEQ ID NO: 307), FIG. 175 (SEQ ID NO: 309), FIG. 177 (SEQ IDNO: 314), FIG. 179 (SEQ ID NO: 316), FIG. 181 (SEQ ID NO: 321), FIG. 183(SEQ ID NO: 323), FIG. 185 (SEQ ID NO: 325), FIG. 187 (SEQ ID NO: 327),FIG. 189 (SEQ ID NO: 329), FIG. 191 (SEQ ID NO: 331), FIG. 193 (SEQ IDNO: 333), FIG. 195 (SEQ ID NO: 335), FIG. 197 (SEQ ID NO: 337), FIG. 199(SEQ ID NO: 339), FIG. 201 (SEQ ID NO: 346), FIG. 203 (SEQ ID NO: 351),FIG. 205 (SEQ ID NO: 353), FIG. 207 (SEQ ID NO: 355), FIG. 209 (SEQ IDNO: 357), FIG. 211 (SEQ ID NO: 363), FIG. 213 (SEQ ID NO: 365), FIG. 215(SEQ ID NO: 371), FIG. 217 (SEQ ID NO: 373), FIG. 219 (SEQ ID NO: 375),FIG. 221 (SEQ ID NO: 377), FIG. 223 (SEQ ID NO: 382), FIG. 225 (SEQ IDNO: 384), FIG. 227 (SEQ ID NO: 389), FIG. 229 (SEQ ID NO: 394), FIG. 231(SEQ ID NO: 396), FIG. 233 (SEQ ID NO: 401), FIG. 235 (SEQ ID NO: 405),FIG. 237 (SEQ ID NO: 409), FIG. 239 (SEQ ID NO: 414), FIG. 241 (SEQ IDNO: 422), FIG. 242 (SEQ ID NO: 428) and FIG. 245 (SEQ ID NO: 430). 4.Isolated nucleic acid which comprises the full-length coding sequence ofthe DNA deposited under any ATCC accession number shown in Table
 12. 5.A vector comprising the nucleic acid of claim
 1. 6. The vector of claim5 operably linked to control sequences recognized by a host celltransformed with the vector.
 7. A host cell comprising the vector ofclaim
 5. 8. The host cell of claim 7 wherein said cell is a CHO cell. 9.The host cell of claim 7 wherein said cell is an E. coli.
 10. The hostcell of claim 7 wherein said cell is a yeast cell.
 11. A process forproducing a PRO polypeptides comprising culturing the host cell of claim7 under conditions suitable for expression of said PRO polypeptide andrecovering said PRO polypeptide from the cell culture.
 12. Isolated PROpolypeptide having at least 80% amino acid sequence identity to an aminoacid sequence selected from the group consisting of the amino acidsequence shown in FIG. 2 (SEQ ID NO: 4), FIG. 4 (SEQ ID NO: 6), FIG. 6(SEQ ID NO: 8), FIG. 8 (SEQ ID NO: 10), FIG. 10 (SEQ ID NO: 12), FIG. 12(SEQ ID NO: 17), FIG. 14 (SEQ ID NO: 22), FIG. 16 (SEQ ID NO: 24), FIG.18 (SEQ ID NO: 29), FIG. 20 (SEQ ID NO: 31), FIG. 22 (SEQ ID NO: 33),FIG. 24 (SEQ ID NO: 41), FIG. 26 (SEQ ID NO: 43), FIG. 28 (SEQ ID NO:50), FIG. 30 (SEQ ID NO: 52), FIG. 32 (SEQ ID NO: 54), FIG. 34 (SEQ IDNO: 56), FIG. 36 (SEQ ID NO: 58), FIG. 38 (SEQ ID NO: 63), FIG. 40 (SEQID NO: 68), FIG. 42 (SEQ ID NO: 70), FIG. 44 (SEQ ID NO: 72), FIG. 46(SEQ ID NO: 77), FIG. 48 (SEQ ID NO: 79), FIG. 50 (SEQ ID NO: 84), FIG.52 (SEQ ID NO: 86), FIG. 54 (SEQ ID NO: 88), FIG. 56 (SEQ ID NO: 95),FIG. 58 (SEQ ID NO: 100), FIG. 60 (SEQ ID NO: 102), FIG. 62 (SEQ ID NO:104), FIG. 64 (SEQ ID NO: 111), FIG. 66 (SEQ ID NO: 116), FIG. 68 (SEQID NO: 118), FIG. 70 (SEQ ID NO: 123), FIG. 72 (SEQ ID NO: 128), FIG. 74(SEQ ID NO: 130), FIG. 76 (SEQ ID NO: 132), FIG. 78 (SEQ ID NO: 134),FIG. 80 (SEQ ID NO: 136), FIG. 82 (SEQ ID NO: 138), FIG. 84 (SEQ ID NO:140), FIG. 86 (SEQ ID NO: 142), FIG. 88 (SEQ ID NO: 144), FIG. 90 (SEQID NO: 146), FIG. 92 (SEQ ID NO: 148), FIG. 94 (SEQ ID NO: 153), FIG. 96(SEQ ID NO: 158), FIG. 98 (SEQ ID NO: 160), FIG. 100 (SEQ ID NO: 162),FIG. 102 (SEQ ID NO: 170), FIG. 104 (SEQ ID NO: 180), FIG. 106 (SEQ IDNO: 189), FIG. 108 (SEQ ID NO: 194), FIG. 110 (SEQ ID NO: 196), FIG. 112(SEQ ID NO: 198), FIG. 114 (SEQ ID NO: 203), FIG. 116 (SEQ ID NO: 210),FIG. 118 (SEQ ID NO: 212), FIG. 120 (SEQ ID NO: 214), FIG. 122 (SEQ IDNO: 216), FIG. 124 (SEQ ID NO: 218), FIG. 126 (SEQ ID NO: 220), FIG. 128(SEQ ID NO: 225), FIG. 130 (SEQ ID NO: 227), FIG. 132 (SEQ ID NO: 229),FIG. 134 (SEQ ID NO: 234), FIG. 136 (SEQ ID NO: 236), FIG. 138 (SEQ IDNO: 243), FIG. 140 (SEQ ID NO: 248), FIG. 142 (SEQ ID NO: 253), FIG. 144(SEQ ID NO: 260), FIG. 146 (SEQ ID NO: 265), FIG. 148 (SEQ ID NO: 267),FIG. 150 (SEQ ID NO: 269), FIG. 152 (SEQ ID NO: 271), FIG. 154 (SEQ IDNO: 273), FIG. 156 (SEQ ID NO: 275), FIG. 158 (SEQ ID NO: 277), FIG. 160(SEQ ID NO: 282), FIG. 162 (SEQ ID NO: 287), FIG. 164 (SEQ ID NO: 292),FIG. 166 (SEQ ID NO: 297), FIG. 168 (SEQ ID NO: 302), FIG. 170 (SEQ IDNO: 304), FIG. 172 (SEQ ID NO: 306), FIG. 174 (SEQ ID NO: 308), FIG. 176(SEQ ID NO: 310), FIG. 178 (SEQ ID NO: 315), FIG. 180 (SEQ ID NO: 317),FIG. 182 (SEQ ID NO: 322), FIG. 184 (SEQ ID NO: 324), FIG. 186 (SEQ IDNO: 326), FIG. 188 (SEQ ID NO: 328), FIG. 190 (SEQ ID NO: 330), FIG. 192(SEQ ID NO: 332), FIG. 194 (SEQ ID NO: 334), FIG. 196 (SEQ ID NO: 336),FIG. 198 (SEQ ID NO: 338), FIG. 200 (SEQ ID NO: 340), FIG. 202 (SEQ IDNO: 347), FIG. 204 (SEQ ID NO: 352), FIG. 206 (SEQ ID NO: 354), FIG. 208(SEQ ID NO: 356), FIG. 210 (SEQ ID NO: 358), FIG. 212 (SEQ ID NO: 364),FIG. 214 (SEQ ID NO: 366), FIG. 216 (SEQ ID NO: 372), FIG. 218 (SEQ IDNO: 374), FIG. 220 (SEQ ID NO: 376), FIG. 222 (SEQ ID NO: 378), FIG. 224(SEQ ID NO: 383), FIG. 226 (SEQ ID NO: 385), FIG. 228 (SEQ ID NO: 390),FIG. 230 (SEQ ID NO: 395), FIG. 232 (SEQ ID NO: 397), FIG. 234 (SEQ IDNO: 402), FIG. 236 (SEQ ID NO: 406), FIG. 238 (SEQ ID NO: 410), FIG. 240(SEQ ID NO: 415), FIG. 242 (SEQ ID NO: 423), FIG. 244 (SEQ ID NO: 429)and FIG. 246 (SEQ ID NO: 431).
 13. Isolated PRO polypeptide having atleast 80% sequence identity to the amino acid sequence encoded by anucleic acid molecule deposited under any ATCC accession number shown inTable
 12. 14. A chimeric molecule comprising a polypeptide according toclaim 12 fused to a heterologous amino acid sequence.
 15. The chimericmolecule of claim 14 wherein said heterologous amino acid sequence is anepitope tag sequence.
 16. The chimeric molecule of claim 14 wherein saidheterologous amino acid sequence is a Fc region of an immunoglobulin.17. An antibody which specifically binds to a PRO polypeptide accordingto claim
 12. 18. The antibody of claim 17 wherein said antibody is amonoclonal antibody.
 19. The antibody of claim 17 wherein said antibodyis a humanized antibody.
 20. The antibody of claim 17 wherein saidantibody is an antibody fragment.
 21. An isolated nucleic acid which hasat least 80% nucleic acid sequence identity to a nucleic acid sequenceselected from the group consisting of that shown in FIG. 1 (SEQ ID NO:3), FIG. 3 (SEQ ID NO: 5), FIG. 5 (SEQ ID NO: 7), FIG. 7 (SEQ ID NO: 9),FIG. 9 (SEQ ID NO:II), FIG. 11 (SEQ ID NO: 16), FIG. 13 (SEQ ID NO: 21),FIG. 15 (SEQ ID NO: 23), FIG. 17 (SEQ ID NO: 28), FIG. 19 (SEQ ID NO:30), FIG. 21 (SEQ ID NO: 32), FIG. 23 (SEQ ID NO: 40), FIG. 25 (SEQ IDNO: 42), FIG. 27 (SEQ ID NO: 49), FIG. 29 (SEQ ID NO: 51), FIG. 31 (SEQID NO: 53), FIG. 33 (SEQ ID NO: 55), FIG. (SEQ ID NO: 57), FIG. 37 (SEQID NO: 62), FIG. 39 (SEQ ID NO: 67), FIG. 41 (SEQ ID NO: 69), FIG. 43(SEQ ID NO: 71), FIG. 45 (SEQ ID NO: 76), FIG. 47 (SEQ ID NO: 78), FIG.49 (SEQ ID NO: 83), FIG. 51 (SEQ ID NO: 85), FIG. 53 (SEQ ID NO: 87),FIG. 55 (SEQ ID NO: 94), FIG. 57 (SEQ ID NO: 99), FIG. 59 (SEQ ID NO:101), FIG. 61 (SEQ ID NO: 103), FIG. 63 (SEQ ID NO: 110), FIG. 65 (SEQID NO: 115), FIG. 67 (SEQ ID NO: 117), FIG. 69 (SEQ ID NO: 122), FIG. 71(SEQ ID NO: 127), FIG. 73 (SEQ ID NO: 129), FIG. 75 (SEQ ID NO: 131),FIG. 77 (SEQ ID NO: 133), FIG. 79 (SEQ ID NO: 135), FIG. 81 (SEQ ID NO:137), FIG. 83 (SEQ ID NO: 139), FIG. 85 (SEQ ID NO: 141), FIG. 87 (SEQID NO: 143), FIG. 89 (SEQ ID NO: 145), FIG. 91 (SEQ ID NO: 147), FIG. 93(SEQ ID NO: 152), FIG. 95 (SEQ ID NO: 157), FIG. 97 (SEQ ID NO: 159),FIG. 99 (SEQ ID NO: 161), FIG. 101 (SEQ ID NO: 169), FIG. 103 (SEQ IDNO: 179), FIG. 105 (SEQ ID NO: 188), FIG. 107 (SEQ ID NO: 193), FIG. 109(SEQ ID NO: 195), FIG. 111 (SEQ ID NO: 197), FIG. 113 (SEQ ID NO: 202),FIG. 115 (SEQ ID NO: 209), FIG. 117 (SEQ ID NO: 211), FIG. 119 (SEQ IDNO: 213), FIG. 121 (SEQ ID NO: 215), FIG. 123 (SEQ ID NO: 217), FIG. 125(SEQ ID NO: 219), FIG. 127 (SEQ ID NO: 224), FIG. 129 (SEQ ID NO: 226),FIG. 131 (SEQ ID NO: 228), FIG. 133 (SEQ ID NO: 233), FIG. 135 (SEQ IDNO: 235), FIG. 137 (SEQ ID NO: 242), FIG. 139 (SEQ ID NO: 247), FIG. 141(SEQ ID NO: 252), FIG. 143 (SEQ ID NO: 259), FIG. 145 (SEQ ID NO: 264),FIG. 147 (SEQ ID NO: 266), FIG. 149 (SEQ ID NO: 268), FIG. 151 (SEQ IDNO: 270), FIG. 153 (SEQ ID NO: 272), FIG. 155 (SEQ ID NO: 274), FIG. 157(SEQ ID NO: 276), FIG. 159 (SEQ ID NO: 281), FIG. 161 (SEQ ID NO: 286),FIG. 163 (SEQ ID NO: 291), FIG. 165 (SEQ ID NO: 296), FIG. 167 (SEQ IDNO: 301), FIG. 169 (SEQ ID NO: 303), FIG. 171 (SEQ ID NO: 305), FIG. 173(SEQ ID NO: 307), FIG. 175 (SEQ ID NO: 309), FIG. 177 (SEQ ID NO: 314),FIG. 179 (SEQ ID NO: 316), FIG. 181 (SEQ ID NO: 321), FIG. 183 (SEQ IDNO: 323), FIG. 185 (SEQ ID NO: 325), FIG. 187 (SEQ ID NO: 327), FIG. 189(SEQ ID NO: 329), FIG. 191 (SEQ ID NO: 331), FIG. 193 (SEQ ID NO: 333),FIG. 195 (SEQ ID NO: 335), FIG. 197 (SEQ ID NO: 337), FIG. 199 (SEQ IDNO: 339), FIG. 201 (SEQ ID NO: 346), FIG. 203 (SEQ ID NO: 351), FIG. 205(SEQ ID NO: 353), FIG. 207 (SEQ ID NO: 355), FIG. 209 (SEQ ID NO: 357),FIG. 211 (SEQ ID NO: 363), FIG. 213 (SEQ ID NO: 365), FIG. 215 (SEQ IDNO: 371), FIG. 217 (SEQ ID NO: 373), FIG. 219 (SEQ ID NO: 375), FIG. 221(SEQ ID NO: 377), FIG. 223 (SEQ ID NO: 382), FIG. 225 (SEQ ID NO: 384),FIG. 227 (SEQ ID NO: 389), FIG. 229 (SEQ ID NO: 394), FIG. 231 (SEQ IDNO: 396), FIG. 233 (SEQ ID NO: 401), FIG. 235 (SEQ ID NO: 405), FIG. 237(SEQ ID NO: 409), FIG. 239 (SEQ ID NO: 414), FIG. 241 (SEQ ID NO: 422),FIG. 242 (SEQ ID NO: 428) and FIG. 245 (SEQ ID NO: 430).
 22. An isolatednucleic acid which has at least 80% nucleic acid sequence identity tothe full-length coding sequence of a nucleotide sequence selected fromthe group consisting of that shown in FIG. 1 (SEQ ID NO: 3), FIG. 3 (SEQID NO: 5), FIG. 5 (SEQ ID NO: 7), FIG. 7 (SEQ ID NO: 9), FIG. 9 (SEQ IDNO: 11), FIG. 11 (SEQ ID NO: 16), FIG. 13 (SEQ ID NO: 21), FIG. 15 (SEQID NO: 23), FIG. 17 (SEQ ID NO: 28), FIG. 19 (SEQ ID NO: 30), FIG. 21(SEQ ID NO: 32), FIG. 23 (SEQ ID NO: 40), FIG. 25 (SEQ ID NO: 42), FIG.27 (SEQ ID NO: 49), FIG. 29 (SEQ ID NO: 51), FIG. 31 (SEQ ID NO: 53),FIG. 33 (SEQ ID NO: 55), FIG. 35 (SEQ ID NO: 57), FIG. 37 (SEQ ID NO:62), FIG. 39 (SEQ ID NO: 67), FIG. 41 (SEQ ID NO: 69), FIG. 43 (SEQ IDNO: 71), FIG. 45 (SEQ ID NO: 76), FIG. 47 (SEQ ID NO: 78), FIG. 49 (SEQID NO: 83), FIG. 51 (SEQ ID NO: 85), FIG. 53 (SEQ ID NO: 87), FIG. 55(SEQ ID NO: 94), FIG. 57 (SEQ ID NO: 99), FIG. 59 (SEQ ID NO: 101), FIG.61 (SEQ ID NO: 103), FIG. 63 (SEQ ID NO: 110), FIG. 65 (SEQ ID NO: 115),FIG. 67 (SEQ ID NO: 117), FIG. 69 (SEQ ID NO: 122), FIG. 71 (SEQ ID NO:127), FIG. 73 (SEQ ID NO: 129), FIG. 75 (SEQ ID NO: 131), FIG. 77 (SEQID NO: 133), FIG. 79 (SEQ ID NO: 135), FIG. 81 (SEQ ID NO: 137), FIG. 83(SEQ ID NO: 139), FIG. 85 (SEQ ID NO: 141), FIG. 87 (SEQ ID NO: 143),FIG. 89 (SEQ ID NO: 145), FIG. 91 (SEQ ID NO: 147), FIG. 93 (SEQ ID NO:152), FIG. 95 (SEQ ID NO: 157), FIG. 97 (SEQ ID NO: 159), FIG. 99 (SEQID NO: 161), FIG. 101 (SEQ ID NO: 169), FIG. 103 (SEQ ID NO: 179), FIG.105 (SEQIDNO: 188), FIG. 107 (SEQ ID NO: 193), FIG. 109 (SEQ ID NO:195), FIG. 111 (SEQ ID NO: 197), FIG. 113 (SEQ ID NO: 202), FIG. 115(SEQ ID NO: 209), FIG. 117 (SEQ ID NO: 211), FIG. 119 (SEQ ID NO: 213),FIG. 121 (SEQ ID NO: 215), FIG. 123 (SEQ ID NO: 217), FIG. 125 (SEQ IDNO: 219), FIG. 127 (SEQ ID NO: 224), FIG. 129 (SEQ ID NO: 226), FIG. 131(SEQ ID NO: 228), FIG. 133 (SEQ ID NO: 233), FIG. 135 (SEQ ID NO: 235),FIG. 137 (SEQ ID NO: 242), FIG. 139 (SEQ ID NO: 247), FIG. 141 (SEQ IDNO: 252), FIG. 143 (SEQ ID NO: 259), FIG. 145 (SEQ ID NO: 264), FIG. 147(SEQ ID NO: 266), FIG. 149 (SEQ ID NO: 268), FIG. 151 (SEQ ID NO: 270),FIG. 153 (SEQ ID NO: 272), FIG. 155 (SEQ ID NO: 274), FIG. 157 (SEQ IDNO: 276), FIG. 159 (SEQ ID NO: 281), FIG. 161 (SEQ ID NO: 286), FIG. 163(SEQ ID NO: 291), FIG. 165 (SEQ ID NO: 296), FIG. 167 (SEQ ID NO: 301),FIG. 169 (SEQ ID NO: 303), FIG. 171 (SEQ ID NO: 305), FIG. 173 (SEQ IDNO: 307), FIG. 175 (SEQ ID NO: 309), FIG. 177 (SEQ ID NO: 314), FIG. 179(SEQ ID NO: 316), FIG. 181 (SEQ ID NO: 321), FIG. 183 (SEQ ID NO: 323),FIG. 185 (SEQ ID NO: 325), FIG. 187 (SEQ ID NO: 327), FIG. 189 (SEQ IDNO: 329), FIG. 191 (SEQ ID NO: 331), FIG. 193 (SEQ ID NO: 333), FIG. 195(SEQ ID NO: 335), FIG. 197 (SEQ ID NO: 337), FIG. 199 (SEQ ID NO: 339),FIG. 201 (SEQ ID NO: 346), FIG. 203 (SEQ ID NO: 351), FIG. 205 (SEQ IDNO: 353), FIG. 207 (SEQ ID NO: 355), FIG. 209 (SEQ ID NO: 357), FIG. 211(SEQ ID NO: 363), FIG. 213 (SEQ ID NO: 365), FIG. 215 (SEQ ID NO: 371),FIG. 217 (SEQ ID NO: 373), FIG. 219 (SEQ ID NO: 375), FIG. 221 (SEQ IDNO: 377), FIG. 223 (SEQ ID NO: 382), FIG. 225 (SEQ ID NO: 384), FIG. 227(SEQ ID NO: 389), FIG. 229 (SEQ ID NO: 394), FIG. 231 (SEQ ID NO: 396),FIG. 233 (SEQ ID NO: 401), FIG. 235 (SEQ ID NO: 405), FIG. 237 (SEQ IDNO: 409), FIG. 239 (SEQ ID NO: 414), FIG. 241 (SEQ ID NO: 422), FIG. 242(SEQ ID NO: 428) and FIG. 245 (SEQ ID NO: 430).
 23. An isolatedextracellular domain of a PRO polypeptide.
 24. An isolated PROpolypeptide lacking its associated signal peptide.
 25. An isolatedpolypeptide having at least about 80% amino acid sequence identity to anextracellular domain of of PRO polypeptide.
 26. An isolated polypeptidehaving at least about 80% amino acid sequence identity to a PROpolypeptide lacking its associated signal peptide.
 27. An isolatednucleic acid encoding the polypeptide of any one of claims 23 to 26.